Paulo Catry

Paulo Catry

Research fellow




:: Research interests


- Ecology, behaviour and conservation of marine birds

- Conservation of sea turtles

- Behavioural ecology of migrant passerines

- Status and conservation of the Portuguese avifauna

- Management of protected areas in the tropics



:: Current research project 

Many seabirds are increasingly threatened by regional and global changes in marine ecosystems (linked to climate changes and overfishing) as well as by heavy accidental mortality in fishing gear. Current research projects include the long-term study of population dynamics of black-browed albatrosses Thalassarche melanophris (

projectoalbatroz/) in the Falkland Islands and of Cory’s shearwaters Calonectris diomedea in the Ilhas Selvagens ( At the same time, research on the behavioural ecology of these species focuses on aspects such as habitat selection, trophic ecology, individual specialization, migration, interactions with fisheries, etc.


Research on marine turtles focuses mostly on breeding biology, impacts of temperature variation (with relevance in the context of global climate change) and the impacts of humans and other predators. This research is closely interlinked with the study and management of marine protected areas in Guinea-Bissau.


Project Arenaria – Distribuição e Abundância de Aves nas Praias e Costas de Portugal. A costa marinha não estuarina e os sectores de mar pouco profundo imediatamente adjacentes são um importante habitat para diversas espécies de aves, como o pilrito-das-praias ou a rola-do-mar. O Projecto Arenaria, uma iniciativa de Citizen Science, estuda a distribuição e tendências populacionais das aves do nosso litoral. Para detalhes ver



:: Publications


Almada F, Abecasis D, Villegas-Ríos D, Henriques S, Pais M, Batista M, Horta e Costa B, Martins J, Tojeira I, Vasco Rodrigues N, Araújo R, Souto M, Alonso H, Falcón JM, Henriques F, Catry P, Cabral H, Biscoito M, Almada VC (in press) Ichthyofauna of the Selvagens Islands. Do small coastal areas show high species richness in the northeastern Atlantic? Marine Biology Research.


Granadeiro JP, Brickle P, Catry P 2014. Do individual seabirds specialize on fisheries’ waste? The case of black-browed albatrosses foraging over the Patagonian shelf. Animal Conservation 17: 19-26.


Pérez C, Granadeiro JP, Dias MP, Alonso H & Catry P 2014. When males are more inclined to stay at home: insights into the partial migration of a pelagic seabird provided by geolocators and isotopes. Behavioural Ecology Advanced Access published December 2013


Catry, P., Dias, M.P., Phillips, R. & Granadeiro, J.P. 2013. Carry-over effects from breeding modulate the annual cycle of a long-distance migrant. An experimental demonstration. Ecology 94: 1230–1235. doi:


Catry P, Lemos R, Brickle P, Phillips RA, Matias R, Granadeiro JP 2013. Predicting the distribution of a threatened albatross: the importance of competition, fisheries and annual variability. Progress in Oceanography 110: 1-10.


Catry P, Poisbleau M, Lecoq M, Phillips RA 2013. Differences in the timing and extent of annual moult of black-browed albatrosses Thalassarche melanophrisliving in contrasting environments. Polar Biology 36: 837-842. DOI 10.1007/s00300-013-1309-5 pdf


Dias MP, Granadeiro JP, Catry P 2013. Individual variability in the migratory path and stopovers of a long-distance pelagic migrant. Animal Behaviour 86: 359-364.


Lourenço PM, Catry P, Lecoq M, Ramírez I, Granadeiro JP 2013. The roles of disturbance, geology and other environmental factors in determining abundance and diversity in coastal avian communities during winter. Marine Ecology Progress Series 479: 223-234. abstract


Ramos R, Granadeiro JP, Rodríguez B, Navarro J, Paiva V, Bécares J, Reyes-González JM, Fagundes I, Ruiz A, Arcos P, González-Solís J, Catry P 2013. Meta-population feeding grounds of Cory’s shearwaters in the subtropical Atlantic Ocean: implications for the definition of Marine Protected Areas based on tracking studies. Diversity and Distributions 19: 1284-1288.


Xavier JC, Baarbosa A, Agusti S, Alonso-Sáez L, Alvito P, Ameneiro J, Ávila C, Baeta A, Canário J, Carmona R, Catry P and 40 other coauthors 2013. Polar marine biology science in Portugal and Spain: recent advances and future perspectives.Journal of Sea Research 83: 9-29


Alonso H, Granadeiro JP, Paiva VH, Dias AS, Ramos JA, Catry P. 2012. Parent–offspring dietary segregation of Cory’s shearwaters breeding in contrasting environments. Marine Biology 159: 1197-1207 DOI 10.1007/s00227-012-1900-2 pdf


Dias MP, Granadeiro JP, Catry P (2012) Do Seabirds Differ from Other Migrants in Their Travel Arrangements? On Route Strategies of Cory’s Shearwater during Its Trans-Equatorial Journey. PLoS ONE 7(11): e49376. doi:10.1371/journal.pone.0049376 pdf


Dias MP, Granadeiro JP, Catry P (2012) Working the day or the night shift? Foraging schedules of Cory’s shearwaters vary according to marine habitat. Marine Ecology Progress Series 467: 245–252. doi: 10.3354/meps09966 pdf


Ramos R, Granadeiro JP, Nevoux M, Mougin J-L, Dias MP, Catry P. 2012. Combined spatio-temporal impacts of climate and longline fisheries on the survival of a trans-equatorial marine migrant. PLoS ONE 7(7): e40822. doi:10.1371/journal.pone.0040822


Rebelo R, Barbosa C, Granadeiro JP, Indjai B, Novais B, Rosa GM, Catry P. 2012. Can leftovers from predators be reliably used to monitor marine turtle hatchling sex-ratios? The implications of prey selection by ghost crabs. Marine Biology 159: 613–620. DOI 10.1007/s00227-011-1839-8.


Scott R, Hodgson DJ, Witt MJ, Coyne MS, Adnyana W, Blumenthal JM, Broderick AC, Canbolat AF, Catry P, Ciccione S, Delcroix E, Hitipeuw C, Luschi P, Pet-Soede L, Pendoley K, Richardson PB, Rees AF, Godley BJ. 2012. Global analysis of satellite tracking data shows that adult green turtles are significantly aggregated in Marine Protected Areas. Global Ecology and Biogeography published online DOI: 10.1111/j.1466-8238.2011.00757.x  


Campos, A.R., Catry, P., Ramos, J., Robalo, J. 2011. Competition among Europeans Robins Erithacus rubecula in the winter quarters: sex is the best predictor of priority of access to experimental food resources. Ornis Fennica 88, online first. 


Granadeiro JP, Phillips RA, Brickle P, Catry P. 2011. Albatrosses following fishing vessels. How badly hooked are they on an easy meal? PLoS ONE 6(3): e17467 


Campos AR, Catry P, Rojas M, Bearhop S, Ramos J & Newton J. 2011. Winter habitat influences the number of feather mites of two species living on European robins Erithacus rubecula. Ardeola 58: 103-111.


Catry P, Almeida A, Lecoq M, Granadeiro JP & Matias R 2011. Low breeding success and sharp population decline at the largest known Falkland skua colony. Polar Biology DOI 10.1007/s00300-011-0978-1


Catry, P., Dias, M.P., Phillips, R.A., Granadeiro, J.P. 2011. Different means to the same end: long-distance migrant seabirds from two colonies differ in behaviour, despite common wintering grounds. PLoS One 6(10): e26079. doi:10.1371/journal.pone.0026079


Catry P, Forcada J, Almeida A 2011. Demographic parameters of black-browed albatrosses Thalassarche melanophris from the Falkland Islands. Polar Biology DOI 10.1007/s00300-011-0984-3.


Catry P, Granadeiro JP, Ramos J, Phillips RA, Oliveira P 2011. Either taking it easy of feeling too tired: old Cory’s shearwaters display reduced activity levels while at sea. Journal of Ornithology 152: 549-555 doi: 10.1007/s10336-010-0616-7


Dias, M.P., Granadeiro, J.P., Phillips, R., Alonso, H. & Catry, P. 2011. Breaking the routine: individual Cory’s shearwaters shift winter destinations between hemispheres and across ocean basins. Proceedings of the Royal Society B. 278: 1786-1793. doi:10.1098/rspb.2010.2114 


Catry, P., Costa, H., Elias, G, Matias, R., 2010. Aves de Portugal: Ornitologia do território continental. Assírio e Alvim. 944pp.


Matias, R. & Catry, P. 2010. The diet of Atlantic yellow-legged gulls (Larus michahellis atlantis) at an oceanic seabird colony: estimating predatory impact upon breeding petrels. European Journal of Wildlife Research DOI: 10.1007/ s10344-010-0384-y


Catry P, Phillips RA, Forster IP, Matias R, Lecoq M, Granadeiro JP, Strange IJ 2010. Brood-guarding duration in black-browed albatrosses: temporal, geographical and individual variation. Journal of Avian Biology 41: 460-469.


Godley BJ, Barbosa C, Bruford M, Broderick AC, Catry P, Coyne MS, Formia A, Hays GC & Witt MJ 2010. Unravelling migratory connectivity in marine turtles using multiple methods. Journal of Applied Ecology 47: 769-778. DOI: 10.1111/j.1365-2664.2010.01817.x 


Catry P, Barbosa C & Indjai B 2010. Tartarugas marinhas da Guiné-Bissau. Estatuto, biologia e conservação. Instituto da Biodiversidade e das Áreas Protegidas, Bissau.


Alonso, H., Matias, R., Granadeiro, J. P. & Catry, P. 2009. Moult strategies of Cory’s shearwaters Calonectris diomedea borealis: the influence of colony location, sex and individual breeding status. Journal of Ornithology 150: 329-337. 


Catry, P., Matias, R., Vicente, L. & Granadeiro, J. P. 2009. Brood-guarding behaviour in Cory’s shearwaters Calonectris diomedea. Journal of Ornithology 150: 103-108.


Catry P, Barbosa C, Paris B, Indjai B, Almeida A, Limoges B, Silva C & Pereira H 2009. Status, ecology and conservation of sea turtles in Guinea-Bissau. Chelonian Conservation and Biology 8: 150-160.


Granadeiro, JP, Alonso H, Almada V, Meneses D, Phillips RA & Catry P 2009. Mysterious attendance cycles in Cory’s shearwaters: an exploration of patterns and hypotheses. Animal Behaviour 78: 1455-1462.


Matias R, Rebelo R, Granadeiro JP & Catry P 2009. Predation by Madeiran wall lizards Teira dugesii on Cory’s Shearwater Calonectris diomedea hatchlings at Selvagem Grande, North Atlantic. Waterbirds 32: 600-603


Ramos, J, Granadeiro JP, Phillips RA & Catry P. 2009. Flight morphology and foraging behavior of male and female Cory’s shearwaters. Condor 111: 424-432.


Catry, P. & Pacheco, C. 2008. Alterações na distribuição da avifauna portuguesa. Bosquejo de algumas das grandes tendências do século XIX ao XXI. In: Equipa Atlas (2008). Atlas das Aves Nidificantes em Portugal (1999-2005). ICNB, SPEA, PNM e SRAM. Assírio & Alvim. Lisboa. Pp.67-83


Equipa Atlas 2008. Atlas das Aves Nidificantes em Portugal (1999-2005). ICNB, SPEA, PNM e SRAM. Assírio & Alvim. Lisboa. 590p.


Tomé, R. & Catry, P. (coords.) 2008. Atlas da Fauna do Vale do Côa. Município de Pinhel, Pinhel. 180p.


Catry, P., Lecoq, M. & Strange, I. J. 2008. Population growth and density, diet and breeding success of striated caracaras Phalcoboenus australis on New Island, Falkland Islands. Polar Biology 31: 1167-1174.


Tomé, R., Catry, P., Bloise, C. & Korpimäki, E. 2008. Breeding density and success, and diet composition of little owls Athene noctua in steppe-like habitats in Portugal. Ornis Fennica 85: 22-32.


Matias, R. & Catry, P. 2008. The diet of feral cats on New Island, Falkland, Islands, and possible impact on breeding seabirds. Polar Biology 31: 609-616.


Reid, T. A., Lecoq, M. & Catry, P. 2007. The white-chinned petrel Procellaria aequinoctialis population of the Falkland Islands. Marine Ornithology, 35: 57-60. 


Catry, P., Silva MC, MacKay S, Campos A, Masello J, Quillfeldt P & Strange IJ 2007. 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 30: 391-394. 


Catry P, Bearhop S & Lecoq N 2007. Sex differences in settlement behaviour and condition of chiffchaffs Phylloscopus collybita at a wintering site in Portugal. Are females doing better? Journal of Ornithology 148: 241-249.


Phillips RA, Catry P, Silk J, Bearhop S, McGill F, Afanasyev V, Strange IJ 2007. Movements, winter distribution and activity patterns of Falkland and brown skuas: insights from loggers and isotopes. Marine Ecology Progress Series 345: 281-291.


Phalan, B., Phillips, R.A., Silk, J.R.D., Afanasyev, V., Fukuda, A., Fox, J., Catry, P. & Croxall, J.P. 2007. Foraging behaviour of four albatross species by day and night. Marine Ecology Progress Series 340: 271-286.


Catry, P., Phillips, R., Forcada, J. & Croxall, J.P. 2006. Factors affecting the solution of a parental dilemma in albatrosses: at what age should chicks be left unattended? Animal Behaviour 72: 382-391. 


Catry, P., Lecoq, M., Conway, G., Felgueiras, M., King, JMB. & Hamidi, S. 2006. Are blackcaps Sylvia atricapilla differential distance migrants by sex? Ardeola 53: 31-38


Catry, P., Phillips, R., Phalan, B. & Croxall, J.P. 2006. Senescence effects in an extremely long-lived bird: the grey-headed albatross Thalassarche chrysostoma. Proceedings of the Royal Society B 273: 1625-1630. 


Catry, P., Granadeiro JP & Oliveira P 2006. Do Cory's shearwaters Calonectris diomedea synchronize laying among close neighbourhoods? A reappraisal using data from artificial nest sites. Acta Ethologica 9: 87-90.


Granadeiro, J.P., Dias, M.P., Rebelo, R., Santos, C.D. & Catry, P. 2006. Numbers and population trends of Cory's shearwaters Calonectris diomedea at Selvagem Grande, Northeast Atlantic. Waterbirds 29: 56-60. 


Catry, P., Lecoq, M., Araújo, A., Conway, G., Felgueiras, M., King, J.M.B., Rumsey, S., Salima, H. and Tenreiro, P. 2005. Differential migration of chiffchaffs (Phylloscopus collybita and P. ibericus) in Europe and Africa. Journal of Avian Biology 36:184-190.


Catry, P., Phillips, R. and Croxall, J.P. 2005. Sexual segregation in birds: patterns, processes and implications for conservation. In Ruckstuhl, K.E. & Neuhaus, P. (eds). Sexual Segregation in Vertebrates: Ecology of the Two Sexes. Cambridge University Press, Cambridge.


Almeida J., Catry P., Encarnação V., Franco C., Granadeiro J.P., Lopes R.J., Moreira F., Oliveira P., Onofre N., Pacheco C., Pinto M., Pitta M.J., Ramos J., Silva L. 2005. Aves. In Livro Vermelho dos Vertebrados de Portugal (Cabral MJ, Almeida J, Almeida PR, Dellinger T, Ferrand de Almeida N, Oliveira ME, Palmeirim JM, Queiroz AI, Rogado L & Santos-Reis M (eds.)). Instituto da Conservação da Natureza. Lisboa.


Catry, P., Phillips, R.A. and Croxall, J.P. 2004 Sustained fast travel by a grey-headed albatross Thalassarche chrysostoma riding an Antarctic Storm. Auk 121: 1208-1213. 


Catry, P., Phillips, R.A., Phalan, B., Silk, J.R.D. and Croxall, J.P. 2004. Foraging strategies of grey-headed albatrosses Thalassarche chrysostoma: integration of movements, activity and feeding events. Marine Ecology Progress Series 280: 261-273. 


Phillips, R.A, Silk, J.R.D., Phalan, B., Catry, P. and Croxall, J.P. 2004. Seasonal sexual segregation in two Thalassarche albatross species: competitive exclusion, reproductive role specialization or foraging niche divergence? Proceedings of the Royal Society of London, B 271: 1283-1291.


Catry, P., Campos, A., Almada, V. and Cresswell, W. 2004. Winter segregation of migrant European robins Erithacus rubecula in relation to sex, age and size. Journal of Avian Biology 35: 204-209. 


Votier, S.C., Furness, R.W., Brearhop, S., Crane, J.E., Caldow, R.W.G., Catry, P., Ensor, K., Hamer, K.C., Hudson, A.V., Kalmbach, E., Klomp, N., Pfeiffer, S., Phillips, R.A. and Thompson, D.R. 2004. Changes in fisheries discard rates and seabird communities. Nature 427: 727-730.



Catry, P., Encarnação, V., Araújo, A., Fearon, P., Fearon, A., Armelin, M. and Delaloye, P. 2004. Are long-distance migrant passerines faithful to their stopover sites? Journal of Avian Biology 35: 170-181. 


Catry, P., Campos, A., Segurado, P., Silva, M. and Strange, I. 2003. Population census and nesting habitat selection of thin-billed prion Pachyptila belcheri on New Island, Falkland Islands. Polar Biology 26: 202-207.


Catry, P., Catry, I., Catry, T. and Martins, T. 2003. Within and between-year winter-site fidelity of chiffchaffs Phylloscopus collybita. Ardea 91: 213-220.   


Lecoq, M. and Catry, P. 2003. Diurnal tape-luring of wintering chiffchaffs results in samples with biased sex ratios. Journal of Field Ornithology 74: 230-232.


Catry, P., Barbosa, C. Indjai, B., Almeida, A., Godley, B.J. and Vié, J.C. 2002. First census and conservation of the green turtle at Poilão, Bijagós Archipelago (Guinea-Bissau); the most important nesting colony on the Atlantic coast of Africa. Oryx 36: 400-403.


Ratcliffe, N., Catry, P., Hamer, K.C., Klomp, N.I. and Furness, R.W. 2002. The effect of age and year on the survival of breeding adult great skuas Catharacta skua in Shetland. Ibis 144: 384-392.


Catry, P., Mellanby, R., Ali, S.K., Haji, S.K., Hughes, M., McKean, M., Anderson, N., Constant, G., Heany, V., Martin, G., Armitage, M. and Wilson, M. 2000. Habitat selection by terrestrial birds on Pemba Island ( Tanzania), with particular reference to six endemic taxa. Biological Conservation 95: 259-267.


Catry, P., Ruxton, G., Ratcliffe, N. Hamer, K.C. and Furness, R.W. 1999. Short-lived repeatabilities in long-lived great skuas: implications for the study of individual quality. Oikos 84: 473-479.


Catry, P. and Furness, R.W. 1999. The influence of adult age on territorial attendance by breeding great skuas Catharacta skua: an experimental study. Journal of Avian Biology 30: 399-406.


Catry, P., Phillips, R.A. and Furness, R.W. 1999. Evolution of reversed sexual size dimorphism in skuas and jaegers. Auk 116: 158-168.


Catry, P., Araújo, A., Cruz, C., Pinheiro, A., Poças, M., Nadum, J., Armelin, M. and Pereira, J.R. 1999. Are mist-nets suitable for rapid habitat evaluations in the tropics? Results from a study in Guinea-Bissau. Ostrich 70: 134-137.


Cresswell, W., Hughes, M., Mellanby, R. Bright, S., Catry, P., Chaves, J., Freile, J., Gabela, A., Martineau, H., MacLeod, R., McPhee, F., Anderson, N., Holt, S., Barabas, S. and Sanchez, T. 1999. Densities and habitat preferences of Andean cloud-forest birds in pristine and degraded habitats in north-eastern Ecuador. Bird Conservation International 9: 129-145.


Catry, P., Ratcliffe, N. and Furness, R.W. 1998. The influence of hatching date on different life-history stages of great skuas Catharacta skua. Journal of Avian Biology 29: 299-304.


Catry, P., Phillips, R.A., Hamer, K.C., Ratcliffe, N. & Furness, R.W. 1998. The incidence of non-breeding by adult great skuas and parasitic jaegers from Foula, Shetland. Condor 100: 448-455.


Catry, P. and Furness, R.W. 1997. Territorial intrusions and copulation behaviour in the great skua Catharacta skua. Animal Behaviour 54: 1265-1272.


Catry, P. and Furness, R.W. 1997. Egg volume and within-clutch asymmetry in great skuas: are they related to adult quality? Colonial Waterbirds 20: 399-405.


Catry, P., Ratcliffe, N. and Furness, R.W. 1997. Partnerships and mechanisms of divorce in the great skua Catharacta skua. Animal Behaviour 54: 1475-1482.


Phillips, R.A., Catry, P., Thompson, D.R., Hamer, K.C. and Furness, R.W. 1997. Inter-colony variation in diet and reproductive performance of great skuas. Marine Ecology Progress Series 152: 285-293.


Stewart, F.M., Phillips, R.A., Catry, P. and Furness, R.W. 1997. Influence of species, age and diet on mercury concentrations in Shetland seabirds. Marine Ecology Progress Series 151: 237-244.

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