Introduction

The New Island reserve and its projects, now with over 30 years of wildlife study and conservation experience behind it, plays a leading role in the Falkland Island's environmental protection efforts. The New Island Conservation Trust operates the only purpose-designed site with established facilities for field studies in the Falkland Islands. The legal status of New Island as a research site is an important guarantee to the researchers who come to work there. Long term research can be embarked upon with the knowledge that projects are protected and will not be hindered by any change in the property status.

The island's value as a natural outdoor laboratory for environmental sciences, as well as its size, provide us with the perfect base to concentrate on a direct and more practical hands-on approach to nature conservation. As a permanent study site a lot of our work concentrates on those species found in this particular island environment. This is also expanded to look closely at the island environment to see how changes may affect species ecology. The influence of weather patterns, solar, temperature, rainfall and the surrounding sea are important factors. The geological makeup, vegetation and introduced species are also important aspects being studied.

This SW corner of the Falkland archipelago is one of the best natural resources the Falklands have. It is hoped, our work will assist in developing plans for the management and conservation of this resource.
PhD student Riek Van Noordwijk from the Netherlands working with King Cormorants

© G.Strange


Biologists Paulo Catry and Ana Campos from Portugal leg-banding a Thin Billed Prion chick

© G. Strange

INTRODUCTION TO SCIENTIFIC STUDIES

The Importance of New Island
New Island is an Important Bird Area, hosting the largest seabird colony in the Falkland Islands. This is the most important nesting site in the world for the Thin-billed prion Pachyptila belcheri (estimated population of 2 million pairs on New Island). Thousands of the globally threatened Black-browed Albatross Thalassarche melanophrys and Rockhopper Penguin Eudyptes chrysocome also nest here, and regionally important populations of several other globally threatened (White-chinned Petrel Procellaria aequinoctialis) and near-threatened species (Gentoo penguin Pygoscelis papua, Magellanic penguin Spheniscus magellanicus and Striated Caracara Phalcoboenus australis) are also present, as well as one of the few South American Furseal Arctocephalus australis colonies found in the Falklands.

During the field seasons 2004 to March 2010, important research on Black-browed Albatross, Rockhopper Penguins, Thin-Billed Prions, Upland Geese, Falkland Skuas, King Cormorants, Striated Caracaras and invasive species such as the feral cat and the Black Rat has been undertaken on the New Island South Reserve. With the Trust's purchase of the northern half of New Island in 2006, our field work has now been extended to cover the whole island.
Many of these projects are ongoing, with the Albatross studies for example, now in their 8th consecutive year.

The New Island Conservation Trust and its researchers periodically publish the results of their research. To enable other researchers and interested web site viewers to obtain a more detailed insight into this research we have introduced a PDF file system into our web site. This system will enable you to view some of the more recently published papers and pre publication material related to the work of the New Island Trust.

Publication of the New Island Management Plan - July 2007
This publication, containing detailed information about the New Island reserve, its conservation and scientific work, history, flora and fauna and future management is now available. This 160 page, full colour book covers every aspect of the island and includes research and census project information, research strategy, environmental management and conservation policies, future projects, as well as photographs, example studies with results and wildlife distribution maps. For a preview of this publication, please click here

FACILITIES FOR SCIENTIFIC STUDIES

The size of the New Island operation is an important consideration, this must fit the island in the sense that field studies will not be invasive or place undue pressure on sites or the species under study. Operations must also take account of other essential elements of this site such as water supplies. In this respect the facility will remain relatively small, selective, independent and with a small administration, but maintaining a high level of research.

The most significant of the Trust's facilities is the Geoffrey C Hughes Field Station which is named after its donor. The Field Station offers a large indoor workspace equiped with areas for wet and dry laboratories, a computer work area, library and herbarium, as well as fully self-contained accomodation for up to 3 or 4 people.


SCIENTIFIC STUDIES CARRIED OUT: 1997 - 2009/10
Below is an outline of some of the studies which have been conducted on New Island (south) over the last 10 years. Many of our studies focus on long-term, non-invasive investigations, thus resulting in a higher quality of results, and a deeper understanding of the species involved.
If you would like any more information regarding any of our conservation and scientific studies, please don't hestiate to contact us (details on our Contact page).


More information about our research projects below, including census and research methodology, results and photographs, can be found in the recently published New Island Management Plan, which is now available. Please contact Ian Strange for more information on how to obtain a copy.




2003-2009/10 (ongoing research):
POPULATION DYNAMICS OF BLACK-BROWED ALBATROSS (Thalassarche melanophrys)
Paulo Catry, Rafael Matias & Miguel Lecoq

In 2003/04 we started a population dynamics and breeding ecology study of Black-browed Albatrosses. Over 600 adult albatrosses have been colour-banded and their fates, breeding success and survival are being monitored on an annual basis. Preliminary results indicate that adult survival is standard for the species and breeding success relatively low. The collection of these data may help us understand why the albatross population on New Island has been increasing, despite so many reports of declining albatross populations worldwide.
At the same time, we are conducting a range of behavioural studies, including comparative studies with albatrosses nesting on Bird Island, South Georgia (in partnership with British Antarctic Survey, and also with the support of individual researchers, namely Rafael Matias and Miguel Lecoq).

Please follow this link to read more detail about the Albatross Project :

Photos: Miguel Lecoq checking nests in a section of the Black-browed Albatross study area; nests are tagged for easy identification

FORAGING ECOLOGY OF BLACK-BROWED ALBATROSSES AND INTERACTIONS WITH FISHERIES
Paulo Catry, José Pedro Granadeiro, Paul Brickle, Rafael Matias, Maria Dias

By studying the fine details of the diet and foraging behavior of albatrosses, we hope to gain important insights into the state of the Patagonian Shelf ecosystem as well as on the way birds interact with the fishing fleet. We are using technologies such as GPS tracking of albatrosses, plus tracking of fishing vessels using the Falklands Vessel Monitoring System (VMS). Tracking is done mostly from New Island, but also from other sites, such as Steeple Jason. Results obtained so far indicate that albatrosses from separate colonies show very different degrees of overlap with the Falkland waters fishing fleet. This study is carried out in partnership with the Falkland Islands Fisheries Department, with British Antarctic Survey and with the University of Exeter.



2003-2009/10 (ongoing research):
THIN-BILLED PRION (Pachyptila belcheri) STUDIES - An Introduction
Dr Petra Quillfeldt & Dr Juan F.Masello

Thin-billed prions are small procellariiform seabirds of 140g, which are long-lived and lay a single egg per breeding season. The excavate burrows, and both parents incubate between 46 and 47 days. Chicks hatch between the end December and mid January and grow rapidly. They fledge at 47-61 days of age, depending on the feeding rate.
We have studied provisioning rates and chick growth as well as hatching and fledging success, in Thin-billed prions at New Island South since 2003 (e.g. Quillfeldt et al. 2003, Polar Biology 26, 746-752).


Photo © Petra Quillfeldt . 2007
Photo left:
A Thin-billed Prion chick, at 22 days old




















Sea surface temperatures during the study period were rising within and between breeding seasons and were negatively correlated with provisioning frequencies of thin-billed prions. Thus, periods of elevated sea surface temperatures were associated with periods of low food availability (Quillfeldt et al. submitted). Thin-billed prions, preying mainly on amphipods, feed at the same trophic level as most commercially caught fish and squid in the Falkland Islands, and data from the thin-billed prions may therefore give insight in variations of resource availability to the fish and squid populations. The data of thin-billed prion provisioning rates suggest that the abundance of macrozooplankton, which provides food for the commercially caught fish and squid, was low.

Seabirds are commonly used to monitor the productivity of their marine environments, but different components of parental behaviour, offspring mortality and offspring condition may not reflect environmental conditions equally sensitively. Chick mass, feeding frequency data and begging intensities, but not overall breeding success and fledging success reflected food availability in the chick-rearing period adequately, because most chicks survived to fledging despite poor provisioning rates. The data suggests that due to the flexible growth rates of chicks of pelagic seabirds, breeding success data may be insensitive or even misleading and should be interpreted with caution. Instead, we emphasize the usefulness of alternative non-invasive methods such as the analysis of feeding rates from video and direct observations.

Photo right:
Dr Juan Masello and Dr Petra Quillfeldt preparing to install a tiny camera into the burrow of a nesting Thin Billed Prion. Using technology such as this, a new insight into these birds behaviours can be obtained

© G. Strange
Thin-billed Prion Research - Related publications:
. Quillfeldt, P., Strange, I.J. & Masello, J.F. (2007) Sea surface temperatures and behavioral buffering capacity in Thin-billed prions: breeding success, provisioning and chick begging. Journal of Avian Biology, 38. View PDF
. Quillfeldt, P., Masello, J.F., Strange, I.J. & Buchanan, K.L. (2006) Begging and provisioning of Thin-billed prions Pachyptila belcheri is related to testosterone and corticosterone. Animal Behaviour, 71, 1359-1369. View PDF
. Quillfeldt, P., Masello, J.F. & Strange, I.J. (2003) Breeding biology of the Thin-billed prion Pachyptila belcheri at New Island, Falkland Islands, in the poor season 2002/2003: Egg desertion, breeding success and chick provisioning. Polar Biology, 26, 746-752. View PDF
. Quillfeldt, P., Strange, I.J., Segelbacher, G. & Masello, J.F. (in press) Male and female contributions to provisioning rates of Thin-billed prions Pachyptila belcheri in the South Atlantic. Journal of Ornithology. (No PDF available)

Contributions to scientific conferences:
. Quillfeldt, P. & Masello, J.F. (2006) When to fledge? The transition from burrow to sea in Thin-billed prions. E-BIRD (European Science Foundation) Scientific Network on Adaptation and constraints in avian reproduction: integrating ecology and endocrinology. Final general workshop "Coping with environmental change: integrating avian ecology and endocrinology". November 17-19, 2006. Glasgow, UK.
. Quillfeldt, P. & Masello, J.F. (2006) Sex-differences in growth and begging and their physiological basis. Speaker at the symposium “Power and information: Conflict at the nest”, International Ornithological Congress, Hamburg, Germany. Journal of Ornithology 147 (5, suppl. 1): 108 (abstract).

Manuscripts submitted / in revision:
. Poisbleau, M., Masello, J.F. & Quillfeldt, P. (Resubmission pending) Acoustical parameters of begging call elements of Thin-billed Prions vary between chicks, but convey little information on chick condition.
. Quillfeldt, P., Dridi, S., Buyse, J. & Masello, J.F. (Resubmission pending) Relationship between plasma leptin levels, begging and provisioning in nestling Thin-billed prions Pachyptila belcheri.
. Quillfeldt, P., Ruiz, G., Aguilar Rivera, M. & Masello, J.F. (submitted) Variability in leucocyte distributions and stress index in Thin-billed prions Pachyptila belcheri during a poor season. Journal of Ornithology.
. Quillfeldt, P., Poisbleau, M., Chastel, O. & Masello, J.F. (submitted) Corticosterone in response to allostatic load in chicks of a pelagic seabird: Diel rhythm, timing of fledging and nutritional stress in the thin-billed prion Pachyptila belcheri. Naturwissenschaften.

 

FALKLAND SKUA (Stercorarius antarcticus antarcticus) ECOLOGY AND DEMOGRAPHY
Paulo Catry, Ana Almeida, Rafael Matias

Over the years, we have conducted a number of studies on the ecology and behaviour of Falkland skuas, a subspecies of skua that is virtually endemic to these islands. We now have interesting information on the migratory habits, diet and demography of this species. Surprisingly, census work carried out in 2004 and 2009 revealed a sharp population decline, the cause of which is so far unknown. One possibility is that the sustained population growth of Striated Caracaras (locally known as Johnny Rooks) Phalcoboenus australis, a known competitor and predator (of chicks and eggs) of skuas, may be giving the skuas a hard time. Alternatively, there could be less prions Pacyptila belcheri available for the skuas to eat, and prions probably are the most important prey item at this site. Studies to investigate these and other possibilities are now under way.
2006-2008/09 (ongoing research)
ROCKHOPPER PENGUIN (Eudyptes chrysocome) STUDIES - An Introduction
Maud Poisbleau, assisted by Laurent Demongin

A detailed study following the complete breeding cycle of Rockhopper penguins on New Island was commenced at the start of the 2006 season by Maud Poisbleau with funding from the Deutsche Forschungsgemeinschaft, Germany. This project is an ongoing study, and will use new technologies for automated monitoring, featuring a stationary weighbridge with an infra-red beam and antenna to read transponders fitted to the penguins. Detailed data on the birds' attendance and body condition is being collected and will contribute to understanding how oceanographic conditions affect this species, an important factor that may help determine the reason for the Rockhopper penguin's population decline.

Recent research on New Island concluded that there are no important land-based negative factors affecting the reproduction of Rockhopper penguins on the reserve, and that these birds are only rarely predated by non-native/invasive mammals (Matias 2005, Matias & Catry, unpublished).
Please see end of Scientific Research section at the bottom of this page for more information on Invasive Species.




2005 - 2008/09
KING CORMORANT/BLUE EYED SHAG (Phalacrocorax atriceps albiventer) STUDIES
- An Introduction
Riek van Noordwijk

A study on the breeding success of this species was commenced in the season of 2005, by Dutch PhD student Riek van Noordwijk. In the 2006 breeding season this study was extended to include the use of time-depth and compass loggers in order to study the inter-relationships between foraging and oceanographic conditions.
This research is now complete and the data being assessed and prepared for publishing.


2005 - (ongoing research)
BREEDING AND DIET OF THE STRIATED CARACARA (Phalcoboenus australis) ON NEW ISLAND
Paulo Catry & Miguel Lecoq

A detailed census of the breeding population was carried out during the 2005/06 and 2006/07 breeding seasons. Furthermore, data on breeding success and diet is being gathered for this little known and near-threatened bird of prey. New Island is one of the most important nesting areas for this species in the Falklands and throughout its global range.


2005 - 2008/09
UPLAND GOOSE (Chloephaga picta leucoptera) STUDIES
Anja Gladbach & David Gladbach

Upland geese are abundant and widespread on New Island, with a high breeding density. Preliminary studies looking at the effects of this high breeding density on population parameters were commenced in the breeding season of 2005/06, and have now been completed.
This study also includes banding young geese to monitor their movements after fledging. Initial results have shown that young birds from New Island have travelled to locations such as Port Stephens, 35 miles away on the West Falkland mainland.

Related Documents:
. Quillfeldt, P., Strange, I.J. & Masello, J.F. (2005) Escape decisions of incubating females and sex ratio of juveniles of the Upland goose Chloephaga picta. Ardea, 93, 171-178. View PDF - 2005




2004-2005: MIGRATION OF THE FALKLAND SKUA (Catharacta skua antarctica) using Geolocators
Paulo Catry

Photo left: A nesting Falkland Skua and chick

The migratory movements of the Falkland skua have been, up until the present, completely unknown. In 2004/05 we retrieved some of the geolocators (Global Locator Service sensors) we had deployed in the previous austral summer season to study skua migration.

While deployed on birds, geolocators are permanently recording light intensity levels, which allow us to calculate sunrise and sunset times, and hence latitude and longitude values for the daily position of the birds. After the end of the breeding season, the skuas we followed with GLS moved north and northeast from the Falkland Islands and wintered over the Patagonian Shelf and further offshore, a couple of thousand kilometres from the breeding colonies. Like other skuas, they displayed a highly pelagic behaviour in winter, rarely venturing close to the Falklands or the South American coast.



1997-2004: SATELLITE TRACKING OF BREEDING PENGUINS

- Rockhopper Penguin (Eudyptes chrysocome)
- Magellanic Penguin (Spheniscus magellanicus)
- Gentoo Penguin (Pygoscelis papua)

This program involved the tracking of three species of penguin which breed on the New Island reserve: Gentoo, Magellanic and Rockhopper penguins. The project gathered valuable information on the foraging and feeding grounds of these penguin species and showed the importance of the Special Co-operation Area (an area licensed for future oil exploration, lying between New Island and the Argentine coast) as a major feeding ground for Rockhoppers during the breeding season. Results also showed that some birds made trips almost as far as the South American mainland (Boersma et al. 2002).

This was a joint project operated by the New Island South Conservation Trust and the University of Washington in Seattle USA, funded jointly by the Falkland Islands Government, Pugh Foundation and the New Island South Conservation Trust.


Full details of this study: View PDF Document - 2002: (3.9MB)
Applying Ecology to Conservation: Tracking Breeding Penguins at New Island South Reserve, Falkland Islands: Boersma P.D., Stokes D.L. & Strange I.J. Aquatic Conservation Vol 12 Number 1, Jan-Feb 2002. ISSN 1052-7613
Copyright 2002 John Wiley & Sons Ltd., Baffins Lane, Chichester, West Sussex, PO19 1UD, Uk.
(Papers in this journal are available online ahead of the print issue at www.interscience.wiley.com )

CENSUS WORK
Selected Examples of Census studies carried out on New Island South


2004, 2006, (1977-2007)
BLACK-BROWED ALBATROSS POPULATION CENSUS AT NEW ISLAND SOUTH, SEPTEMBER 2004, SEPTEMBER 2006 AND POPULATION INCREASE TRENDS FROM 1977-2007
Ian J. Strange

The Black-browed albatross Thalassarche melanophrys is found all around the southern oceans between 25° and 60°S. The species was recently re-assessed and given a conservation status of Endangered on the IUCN Red List for 2004 (IUCN, 2004). Decreases in breeding populations have been reported and are largely attributed to bycatch in long-line fisheries (Croxall and Gales, 1998; Gales, 1998; Tickell, 2000; Woehler et al., 2001). The Falkland Islands hold over 60% of the global population and are the most important breeding site in the world for this species. A 25% fall in population over the last 20 years, at colonies in the Falkland Islands, has been reported (IUCN, 2002).
The aim of the present study is to present results of recent surveys of the population of Black-browed albatross at the New Island South Nature Reserve in the West Falklands, together with a long-term data set. Counts of adults returning to the colonies in late September-early October were conducted in the field and from aerial photography. Both methods gave comparable results.

Please click here to download a PDF of this paper (extracted from the New Island Management Plan 2007, Annex 5)
Strange I.J., Black-Browed albatross (Thalassarche melanophrys) Population Census at
New Island South, Falkland Islands. September-October 2004, September 2006 and Population Increase Trends from 1977 to 2007. New Island, Falkland Islands - A South Atlantic Wildlife Sanctuary for Conservation Management, July 2007. ISBN#978-0-9550708-1-3
Copyright I.J. Strange.


2005/06
CENSUS OF THE WHITE-CHINNED PETREL (Procellaria aequinoctialis) IN THE FALKLAND ISLANDS
Paulo Catry & Miguel Lecoq (New Island)

This census was carried out by Falkland Conservation and New Island Conservation Trust in 2005/06. The Falklands population of the white-chinned petrel is very small (less than one hundred pairs) and New Island is one of two important nesting sites. A report was produced and a paper is being prepared for publication.



1997-2006: GENTOO PENGUIN (Pygoscelis papua) CENSUS
Gentoo penguin numbers on New Island have a long history of fluctuation. The first record of the Island's Gentoo population is from 1933, when Government naturalist, A.G. Bennett, conducted a census and obtained a result of 2,500 nests. When the Island was taken over by Ian Strange in 1972, numbers were in the low hundreds, mainly due to past persecution.
Since the protection of the island, the general population trend has shown an increase, however, total breeding failure in the 2002/03 breeding season, possibly caused by a harmful algal bloom known as 'Red Tide', devastated New Island's population of Gentoo penguins. The South reserve's population in the preceeding season of 2001 was recorded at 2,485 breeding pairs; in the following season adult mortality, 0 breeding pairs and possible emmigration were observed.
In the 2003/04 breeding season, only 21% of the original 2,485 pairs returned to breed, and further low-level mortality was recorded in this season.
Censuses carried out in the subsequent breeding seasons have seen the population slowly but steadily recovering, with 560 pairs counted in 2006/07.

Full details of Census methodology and results for 1997-2001 Censuses: View PDF Document - 2001: (890KB)
Strange I.J., New Island South Conservation Trust: Gentoo Penguin (Pygoscelis papua) Census. Penguin News, New Island South Conservation Trust Supplement, October 12 2001.
Copyright New Island South Conservation Trust




1994-2004: THIN-BILLED PRION (Pachyptila belcheri) CENSUS

Some ten years research into this small ground burrowing petrel has now been carried out. Studies have been made of the general ecology and now scientists are carrying out more detailed investigations of this species.

In the season of 2001- 2002 the first census of this species was carried out resulting in a figure for an estimated population of four million breeding adults. This figure is one of the most significant to be confirmed on New Island, and makes the reserve one of the most important breeding grounds in the world for this species.

Full details of this study:

View PDF Document 1- 2002 (260KB)
1. Catry P., Campos A., Segurado P., Silva M. & Strange I.J. 2002, Population census and nesting habitat selection of Thin-Billed Prion Pachyptila belcheri on New Island, Falkland Islands. Polar Biology 26: 202-207
Copyright Springer-Verlag 2003.

View PDF Document 2 - 2003 (260KB)
2. Quillfeldt P., Masello J.F. & Strange I.J. 2003. Breeding biology of the Thin-Billed Prion, Pachyptila belcheri, at New Island, Falkland Islands: Egg desertion, breeding success, and chick provisioning in the poor season 2002/2003. Polar Biology 26: 746-752
Copyright Springer-Verlag 2003. The original publication is available at http://link.springer.de/ or at http://link.springer-ny.com.



1996-2001: BLACK-BROWED ALBATROSS (Thalassarche melanophrys) POPULATION CENSUS
 October 2000: BLACK-BROWED ALBATROSS - WEST CLIFFS POPULATION - AERIAL SURVEY

Full details of these studies: View PDF Document - 2001: (2.2MB)
Strange I.J. 2001, Black Browed Albatross, (Diomedea melanophris), Population Census, New Island South. Penguin News, New Island South Conservation Trust Supplement 3, November 2, 2001.
Copyright New Island South Conservation Trust


Photo left: The view across the main Rockhopper Penguin and Black Browed Albatross colony on New Island South


2000: ROCKHOPPER PENGUIN (Eudyptes chrysocome) CENSUS
VIA ELECTRONIC COUNTER

Full details of this Census: View PDF Document - 2001: (1.5MB)
Strange I.J. 2001, Counting Rockhopper Penguins Electronically: Settlement Colony, New Island South Reserve, October 2000. Penguin News, New Island South Conservation Trust Supplement, October 12, 2001.
Copyright New Island Conservation Trust




 NON-NATIVE/INVASIVE SPECIES

Rodent Control
The Black Rat (Rattus rattus) on the New Island South Reserve

Like many of the islands in the Falklands which have been exploited by man, New Island is not free of rodents. Management since 1971 has placed a lot of attention to the control of rodents. Based on the knowledge and advice of New Zealand experts, studies are being carried out on the reserve to assess the possibilities of carrying out a total eradication program of the two species of rodent found on the island.
Scientific data has been collected on the Black rat (Rattus rattus) and House Mouse (Mus musculus) using survey and index trap lines covering the different environments on the reserve. Baiting, disposal of potential sources of food by burning and general good husbandry is ongoing. This is a project demonstrating that rodents and the potential damage they may cause, can be reduced through good management. This project is now in its fifth year.
Photo left:
The late Ingrid Schenk setting a trap line for rodent control

2004-2005/06 (ongoing research)
THE IMPACT OF INTRODUCED PREDATORS ON THE LOCAL BIRD POPULATIONS
Rafael Matias

Studies are being conducted to evaluate the current impact that introduced mammals are having on the bird populations nesting on New Island. Dietary studies, for example, have revealed that although Thin-billed Prions are regularly killed and eaten by feral cats, the predator preference goes for mammals such as cottontail rabbits, rats and mice. The current direct impact of cats on Prions seems to be low and they might even be having a positive role be keeping the rodent populations low. Again, these results are preliminary.

2004-2005
DIET ANALYSIS OF THE BLACK RAT (Rattus rattus) USING STABLE ISOTOPE RATIOS
Dr Petra Quillfeldt & Dr Juan F. Masello

We will analyze isotope ratios of Black rat (Rattus rattus) tissues, stomach contents and potential prey items for trophic level (e.g. plants vs. birds) and prey origins (marine vs. terrestrial). The data, together with rat trapping data, will be used to assess the impact of these introduced rodents on the native bird population, in particular the Thin-billed prions. This project is carried out in co-operation with Dr. Rona McGill (Scottish Universities Research & Reactor Centre) and Prof. Robert W. Furness (University of Glasgow).

Introduced Mammals - Related documents:

. Catry, P., Silva, M.C., MacKay, S., Campos, A., Masello, J., Quillfeldt, P. & Strange, I.J. (2006) Can thin-billed prions Pachyptila belcheri breed successfully on an island with introduced rats, mice and cats? The case of New Island, Falkland Islands. Polar Biology. View PDF - 2006 (please note: copyright © Springer-Verlag 2006 - PDF for consultation only).

Manuscripts in preparation:
. Introduced mammals coexist with seabirds at New Island, Falkland Islands, I: Abundance of rodents and diet of ship rats during the incubation period of Thin-billed Prions (Ingrid Schenk, Ian J. Strange, Juan F. Masello, Petra Quillfeldt). View PDF
. Introduced mammals coexist with seabirds at New Island, Falkland Islands, II: Stable isotope analysis of the diet of introduced mammals during the nestling period of Thin-billed prions (Petra Quillfeldt, Ian J. Strange, Juan F. Masello, Anja Gladbach, Verena Roesch, Rona A.R. McGill & Robert W. Furness). View PDF