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Airo 31
AIRO 31     Year 2023      Current issue

03 | Riparian galleries can act as refuge for birds in Eucalyptus plantations hit by wildfires.

Pedro Filipe Pereira & Rui Lourenço

20 | Changes in numbers and distribution of Yellow-legged Gull Larus michahellis nesting in Portugal during the last two decades.

Nuno Oliveira, Hany Alonso, Vitor Encarnação, Dília Menezes, Maria Magalhães, Gilberto Carreira, Sol Heber, Rui Pimentel, Valter Medeiros, Jaime Bairos, Pedro Raposo, Rúben Coelho, Rui Rufino, Renato Neves, Tânia Nascimento, Elisabete Silva & Joana Andrade

03 | Nesting terns and gulls (Laridae) on the Selvagens Islands in 2023 and a brief review of past occurrence

Paulo Catry, Paulo Oliveira, Dília Menezes & José Pedro Granadeiro

Airo 30
AIRO 30     Year 2022   

03 | Two worlds apart: do dramatic differences in wintering European robin populations result from despotism or from habitat specialisation?.

Paulo Catry, Ana Campos, Pedro Duarte-Coelho, Jason Newton & Stuart Bearhop


22 | The breeding population of the Egyptian Goose Alopochen aegyptiaca in the city of Lisbon.

Hany Alonso, Adriana Arnal Núñez, João Miguel Albuquerque & Pedro Geraldes

AIRO 29     Year 2021



World Owl Conference



15 | Migration of the Eurasian Scops-owl (Otus scops) over the Western Mediterranean.

Carles Barriocanal, David Robson, Gabriel Gargallo


23 | Distribution and current state of the Short-eared Owl (Asio flammeus) in Ukraine.

Andriy-Taras Bashta


35 | Birds as prey of owls: an intra- and interspecific comparison.

Simon Birrer                                             Supporting information

46 | Owl education methods used around the world.

Karla Bloem


54 | Sensitivities to land use change by breedingnShort-eared Owl (Asio flammeus) in Britain.

Jennifer A. Border, John Calladine


66 | An evaluation of 25 years of volunteer nocturnal owl surveys in Manitoba, Canada.

James R. Duncan. 

83 | Breeding ecology of captive-released and wild Western Burrowing Owls (Athene cunicularia hypugaea) in southwestern Manitoba, Canada, 2010-2012.

Alexandra L.M. Froese, James R. Duncan


95 | Movements and habitat selection of Short-eared Owls (Asio flammeus) in North America.

Marcel A. Gahbauer, Travis L. Booms, Paul G. Novak, Mathew D. Schlesinger, Lisa Takats-Priestley, Kristen L. Keyes


115 | Status and monitoring of Short-eared Owls (Asio flammeus) in North and South America.

Marcel A. Gahbauer, Robert A. Miller, Neil Paprocki, Alejandro Morici, Adam C. Smith,David A. Wiggins

143 | A 25 year overview of the contaminant exposure and effects in Eurasian Eagle-owl (Bubo bubo) from southern Spain.

Pilar Gómez-Ramírez, Silvia Espín, Mario León-Ortega, Francisco Botella, José Francisco Calvo, Pedro Javier Jiménez-Montalbán, Pedro María-Mójica, José Enrique Martínez, Isabel Navas, Juan Manuel Pérez-García, José Antonio Sánchez-Zapata, Alejandra Taliansky-Chamudis, Nico Van Den Brink, Emma Martínez-López, Antonio Juan García-Fernández

166 | Pre-incubation behaviour of a pair of Eurasian Eagle-owls (Bubo bubo) based on IR-video recordings at a nest site in Baden-Württemberg, Germany in 2014-2015.

Christian T. Harms

184 | Incubation period behaviour of a pair of Eurasian Eagle-owls (Bubo bubo) based on IR-video recordings at a nest site in Baden-Württemberg, Germany in 2015.

Christian T. Harms

207 | Monitoring owl populations in a natural mountainous forest in the Austrian Alps (Dürrenstein Wilderness Area, IUCN Category I).

Thomas Hochebner, Ingrid Kohl, Claudia Schütz, Gerhard Rotheneder

216 | Recent and historical distribution of Little Owl (Athene noctua) in Bulgaria.

Assen Ignatov, Georgi Popgeorgiev.                                   Supporting information

223 | Designs for nest box, owl stopper, and patio trap for Eurasian Scops-owl (Otus scops) and other small cavity-nesting owls.

David H. Johnson, Elif Göçer, C. Can Bilgin

238 | Owl telemetry – a comparison of transmitter designs and harness methods for Ural Owls (Strix uralensis) in Austria.

Ingrid Kohl, Christoph Leditznig, Franz Aigner

258 | Use of telemetry for guiding the reintroduction of Ural Owls (Strix uralensis) in Austria.

Ingrid Kohl, Christoph Leditznig, Franz Aigner, Theresa Walter, Richard Zink

278 | Habitat degradation and climate change as drivers of long-term declines of two forest-dwelling owl populations in boreal forest.

Erkki Korpimäki

291 | Estimating the population and distribution trends of owls in Portugal using citizen science data
from Program NOCTUA-Portugal and other sources.

Rui Lourenço, Sara Moreira, Inês Roque, Ricardo Tomé

306 | A review on the captive propagation and conservation of the Western Burrowing Owl (Athene cunicularia hypugaea) in British Columbia, 1983-2017.

Lauren Meads, Aimee Mitchell, Mike Mackintosh

315 | Impact of the environment on the number of Tawny Owl (Strix aluco) territories in beech forests, Slovakia.

Vladimír Nemček

326 | History of Northern Saw-whet Owls (Aegolius acadicus) in North America: Discovery to present day.

Mitchell L. Pruitt, Kimberly G. Smith

350 | TytoTagus Project: Common Barn Owl post-fledging dispersal and survival in the Tagus Valley, Portugal.

Inês Roque, Ana Marques, Rui Lourenço, J. Tiago Marques, Carlos Godinho, Pedro Pereira, João E. Rabaça

367 | Field observations of Pere David’s Owl (Strix davidi) in central China,140 years after its first description.

Wolfgang Scherzinger, Yun Fang, Mei Shi, Yue-Hua Sun

393 | Population dynamics and conservation of the Western Burrowing Owl (Athene cunicularia hypugaea) in the United States and Canada: a 20-year update.

Steven R. Sheffield

416 | Using bioacoustics to study vocal behaviour and habitat use of Barred Owls, Boreal Owls and Great Horned Owls.

Julia Shonfield, Erin M. Bayne

432 | Age and sex of Snowy Owls (Bubo scandiacus) during summer irruption on Beliy Island, Yamal in 2015.

Roar Solheim, Aleksandr Sokolov

442 | Home range, perching height and reaction to approaching humans by radio-tagged Ural Owls.

Roar Solheim, Geir A. Sonerud, Hallvard Strøm

451 | Snowy Owl (Bubo scandiacus) males select the highest vantage points around nests.

Roar Solheim, Ingar Jostein Øien, Tomas Aarvak, Karl-Otto Jacobsen

460 | Snowy Owl hunting behaviour and prey spotting distances revealed by vole lures.

Roar Solheim

467 | The quality of protein sources for egg production in Tawny Owls (Strix aluco) and Eurasian Sparrowhawks (Accipiter nisus).

Arnold van den Burg

477 | Male Little Owl (Athene noctua) attempting brood care after loss of nesting female.

Ronald van Harxen, Pascal Stroeken

487 | Molecular taxonomy and systematics of owls (Strigiformes) - An update.

Michael Wink, Hedi Sauer-Gürth                                  Supporting information

501 | The Population Density of the Eurasian Scops-owl (Otus scops) Along the Eastern Adriatic Coast.

Tjaša Zagoršek, Al Vrezec

511 | Reintroducing the Ural Owl (Strix uralensis) to Austria – Requirements for a successful comeback.

Richard Zink, Theresa Walter, Christoph Leditznig, Ingrid Kohl

521 | The Eurasina Eagle-owl (Bubo bubo) as a breeder on buildings in Germany.

Martin Lindner

527 | The irruptive nature of Snowy Owls: an overview of some of the recent  empirical evidence.

Jean-François Therrien, Gilles Gauthier, Tom McDonald,  Norman Smith, Scott Weidensaul, David Brinker,   Rebecca McCabe, Audrey Robillard, Joël Bêty, Nicolas Lecomte

Airo 29
AIRO 28     Year 2021      
Airo 28
AIRO 27     Year 2020

03 | Evaluating the potential of artificial nests as a conservation measure for Cory’s Shearwaters (Calonectris borealis) breeding in Berlengas Archipelago, Portugal.

Nuno Oliveira, Patrícia Abreu, Joana Bores, Ana Isabel Fagundes, Hany Alonso & Joana Andrade


20 | Sexual dimorphism and determination of sex of Yellow-legged gulls (Larus michahellis lusitanius) in southern Portugal.

Gheorghiu, Ana R.; Valkenburg, Thijs; Cotão, António; Casero, Maria & Azevedo, Fábia

Airo 27
AIRO 26     Year 2019

03 | Internet photography forums as sources of avian dietary data: bird diets in Continental Portugal.

Pedro M. Lourenço


27 | Results from an avifaunal survey along the Corubal and Fefine rivers, Guinea-Bissau.

Paulo Catry, Miguel Lecoq, Mohamed Henriques, Pierre Campredon & José Pedro Granadeiro


33 | Diet of the White Stork (Ciconia ciconia) in a heterogeneous Mediterranean landscape: the importance of the invasive Red Swamp Crayfish (Procambarus clarkii).

Eduardo M. Ferreira, Filipa Grilo, Raquel C. Mendes, Rui Lourenço, Sara M. Santos & Francisco Petrucci-Fonseca

Airo 26
Airo 25
AIRO 25     Year 2018

03 | Monitoring waterbird populations in the Tejo estuary, Portugal: report for the decade 2007-2016.

Pedro M. Lourenço, Hany Alonso, José A. Alves, Ana T. Carvalho, Teresa Catry, Hélder Costa, Joana S. Costa, Maria P. Dias, Vítor Encarnação, Pedro Fernandes, Ana I. Leal, Ricardo C. Martins, Filipe Moniz, Sara Pardal, Afonso Rocha & Carlos D. Santos


32 | Feral cat control and the population recovery of the endemic St Helena Plover.

Dennis Leo, Kevin George, Gavin Ellick, Steffen Oppel


44 | Small but fierce: invasive ants kill Barolo Shearwater (Puffinus lherminieri baroli) nestling in Cima islet  (PORTO SANTO, MADEIRA ARCHIPELAGO). 
Mário Boieiro, Ana Isabel Fagundes, Cátia Gouveia, Jaime A. Ramos & Dília Menezes

Airo 24
AIRO 24     Year 2016 / 2017

03 | Contribution to the study of the breeding biology of the European shag (Phalacrocorax aristotelis) in Berlengas archipelago, Portugal. Elisabete Silva, António Luís e Nuno Oliveira


17 | First bird-mortality figures from telephone line collisions in open grassland areas of Lanzarote and Fuerteventura (Canary Islands, Spain). Juan Antonio Lorenzo


28 | Recent changes on migratory behaviour of the White stork (Ciconia ciconia) in Portugal: Towards the end of migration?

Inês Catry, Vítor Encarnação, Carlos Pacheco, Teresa Catry, Paulo Tenreiro, Luís P. da Silva, Fernando Leão, Filipe Bally, Sara Roda, Silvério Lopes, Carlos Capela, Hany Alonso, Sérgio Saldanha, Otília Urbano, Jorge Saraiva, Paulo Encarnação, Nuno Sequeira, Miguel Mendes, Paulo Monteiro, Gonçalo Elias e Francisco Moreira


36 | Diet of great cormorants (Phalacrocorax carbo) in the Sado estuary, Portugal, and possible impacts on local fisheries and aquaculture. Paulo Catry, Ana Campos, Teresa Catry, Carlos Assis, Susana Pereira e José Pedro Granadeiro

Airo 23
AIRO 23     Year 2014 / 2015

03 | The energetic cost of pre-alternate body moult in black-tailed godwits (Limosa limosa) staging in Portugal during northward migration. Pedro M. Lourenço


10 | Bulwer’s petrels breeding numbers on the Desertas Islands (Madeira): improved estimates indicate the NE Atlantic population to be much larger than previously thought. Paulo Catry, Maria Dias, Teresa Catry, Patrícia Pedro, Paulo Tenreiro & Dília Menezes


15 | Ornithological importance of rice cultivations around the Tejo and Sado estuaries during winter. Pedro M. Lourenço


25 | Habitat restoration on Praia Islet, Azores Archipelago, proved successful for seabirds, but new threats have emerged. Joël Bried & Verónica C. Neves


35Current status and distribution of nocturnal birds (Strigiformes and Caprimulgiformes) in Portugal. Rui Lourenço; Inês Roque, Ricardo Tomé, Pedro Sepúlveda & Equipa Atlas, Cecília Melo, Carlos Pereira



51 | Extinction of the heron colony at Murta Dam. Paulo A. M. Marques & Susana E. Coelho


55 | Wintering population of Red kite (Milvus milvus) in the Castro Verde SPA (Portugal). Rita Ferreira, Hugo Zina, Ana Teresa Marques, Ana Delgado, Diogo Venade & Hugo Costa


56 | Population size of Montagu’s harrier (Circus pygargus) in the Castro Verde SPA (Portugal). Ana Teresa Marques, Rita Ferreira, Hugo Zina, Joana Santos & Hugo Costa

Airo 22
AIRO 22     Year 2012

03 | Estimating feral cat density on Corvo Island, Azores, to assess the feasibility of feral cat eradication. Steffen Oppel, Sandra Hervías, Nuno Oliveira, Tânia Pipa, Honor Cowen, Carlos Silva & Pedro Geraldes


12 | Invasive mammal species on Corvo Island: is their eradication technically feasible? Sandra Hervías, Carlos Silva, Tânia Pipa, Nuno Oliveira, Ana Henriques, Pedro Geraldes, Sandra Mealha, Eduardo Diaz, Inês Bravo, Steffen Oppel & Félix Manuel Medina


29 | The first translocation of Cory’s Shearwater (Calonectris diomedea borealis) chicks, and review of SOS Cagarro campaigns, on Corvo Island, Azores. Rosemary Sigger, Sandra Hervías, Tânia Pipa, Pedro Geraldes, José Tavares & Carlos Silva  


43 | Eradication and control of vertebrate invasive species in Madeira and Selvagens Archipelago: a short review. Paulo Oliveira & Dília Menezes

49 | Estimating density of shearwaters in the Italian sea from vessel-based surveys. Giorgia Gaibani, Carlo

Catoni, Licia Calabrese, Paolo Piovani, Ana Meirinho, Iván Ramírez, Pedro Geraldes & Jacopo G. Cecere

56 | A Survey of Breeding Seabirds on Anguilla. Collin Wilkinson, Mike Pollard, Geoff M. Hilton & Pedro


70 | Seasonal abundance and population trends of waterbirds at Caldeira de Tróia, Sado estuary. Teresa

Catry, Inês Catry & Vitor Encarnação

79 | Population trends in the steppe birds of Castro Verde in the period 2006-2011: consequences of a

drought event and land use changes? Francisco Moreira, Pedro J. Leitão, Nicholas W. Synes, Rita Alcazar,

Inês Catry, Carlos Carrapato, Ana Delgado, Beatriz Estanque, Rita Ferreira, Pedro Geraldes, Marisa

Gomes, João Guilherme, Inês Henriques, Miguel Lecoq, Domingos Leitão, Ana Teresa Marques, Rui

Morgado, Rui Pedroso, Ivan Prego, Luís Reino, Pedro Rocha, Ricardo Tomé, Hugo Zina & Patrick E. Osborne

Airo 21
AIRO 21     Year 2011

03 | Distribution and population trends of the European Roller in pseudo-steppe areas of Portugal: results

from a census in sixteen SPAs and IBAs. Inês Catry, João Paulo Silva, Ana Cardoso, Ana Martins, Ana

Delgado, Ana Rita Sanches, Andreia Santos, Beatriz Estanque, Carlos Miguel Cruz, Carlos Pacheco,

Domingos Leitão, Eunice Pereira, Estrela Matilde, Fernando Moital, Fernando Romba, Nuno Sequeira,

Paulo Monteiro, Pedro Rocha, Ricardo Correia, Rita Alcazar, Rogério Cangarato, Ruben Heleno, Teresa

Catry, Teresa Silva & Tiago Ferro


15 | Unravelling the occurrence patterns of cinereous vultures (Aegypius monachus) in southern Portugal

using non-standardized observations. Pedro M. Lourenço


24 | On the occurrence of the red-billed tropicbird (Phaethon aethereus) in the Portuguese seas: is this an

expanding species? Paulo Catry


31 | First complete census of Cory’s Shearwaters (Calonectris diomedea borealis) breeding at Berlengas

Islands (Portugal), including the small islets of the archipelago. Miguel Lecoq, Iván Ramírez, Pedro

Geraldes & Joana Andrade

AIRO 20     Year 2010

03 | Mediterranean Gulls (Larus melanocephalus) wintering in Spain and Portugal: one population or several?

Carles Carboneras, Raül Aymí, Albert Cama, Camille Duponcheel, Joan Ferrer, Renaud Flamant, Salvador

García, Jorge Garzón, Antonio Gutiérrez, Marc Olivé, Martin Poot


12 | Contribution for the conservation of Manx shearwaters (Puffinus puffinus), a threatened species in

Madeira. João Nunes, Marta Nunes, Ana Isabel Fagundes, Thijs Valkenburg


22 | Emergency of multi-resistant Escherichia coli in faecal samples recovered from wild birds. Carla

Ferreira, Romeu Simões, Ricardo Brandão, Paulo Martins da Costa


29 | Seabirds of Selvagem Pequena and Ilhéu de Fora: censuses and notes, with data on the diet of the

Yellow-legged Gull. Paulo Catry, Pedro Geraldes, João Pedro Pio, Ana Almeida


36 | Population trends of Cory’s Shearwaters (Calonectris diomedea borealis) breeding at Berlengas Islands,

Portugal. Miguel Lecoq, Paulo Catry, José P. Granadeiro

42 | The role of artificial nest provisioning in the re-establishment of a breeding Pallid Swift (Apus pallidus)

colony. Teresa Catry, Inês Catry

Airo 20
AIRO 19     Year 2009

03 |  Subtropical Roseate Terns (Sterna dougallii) of Santa Maria (Azores) deliver more appropriate sized

prey to their chicks than Common Terns (Sterna hirundo). José C. Pereira & Jaime A. Ramos


13 | Rice field use by raptors in two Portuguese wetlands. Pedro M. Lourenço


19 | The rice fields around the estuaries of the Tejo and Sado are a critical stopover area for the globally

near-threatened Black-tailed (Godwit Limosa l. limosa): Site description, international importance and

conservation proposals. Pedro M. Lourenço, Niko Groen, Jos. C.E.W. Hooijmeijer & Theunis Piersma


27 | Do diurnal migrants follow the Guadiana River when crossing dry sectors of SW Iberia? Paulo Catry,

Ana Campos, Vanda Miravent & João E. Rabaça

Airo 19
Airo 18
AIRO 18     Year 2008

03 |  Modelling owl mortality on roads of Alentejo (southern Portugal). Clara Isabel Correia da Silva, Clara

Grilo & António Mira

15 | Nocturnal and diurnal nearshore foraging of European Storm Petrels (Hydrobates sp.) along the Lisbon

coast, Portugal. Martin Poot


24 | Monthly counts of Ring-necked Parakeets (Psittacula krameri) at Jardim da Estrela, Lisbon. Rafael Matias


29 | Roof-nesting yellow-legged gulls (Larus michahellis) in the town of Peniche, Portugal. Lurdes Morais &

António Casanova


34 | On the occurrence and nesting of the Black Wheatear (Oenanthe leucura) in the area of Foz-Tua (Douro

Wine Demarked Region, NE Portugal). Tiago Múrias, Sérgio Bruno Ribeiro, Ana Isabel Nunes e Célia Gomes

Airo 17
AIRO 17     Year 2007

05 | Spatial distribution patterns, habitats correlates and population estimates of steppe birds in Castro

Verde. F. Moreira, P. J. Leitão, R. Morgado, R. Alcazar, A. Cardoso, C. Carrapato, A. Delgado, P. Geraldes,

L. Gordinho, I. Henriques, M. Lecoq, D. Leitão, A. T. Marques, R. Pedroso, I. Prego. L. Reino, P. Rocha, R.

Tomé & P. E. Osborne

Airo 16
AIRO 16     Year 2006

03 | The status of Marsh Harrier (Circus aeruginosus) in Portugal: the breeding population survey (1998). G.

Rosa, D. Leitão, C. Mendes, F. Leão, C. Fernandes, H. Costa, C. Pacheco & J. R. Pereira


13 | Numbers, behaviour and origino f Mediterranean Gulls (Larus melanocephalus) wintering along the west

coast of Southern Portugal. M. Poot & R. Flamant


23 | Seasonal abundance of aquatic birds at Óbidos Lagoon. P. M. Lourenço


31 | The importance of Ria de Aveiro for breeding Purple Heron (Ardea purpurea) in Portugal. S. Marques &

J. A. Ramos


43 | Impacto in birds by the médium tension power line of the Mourela’s plateau (Peneda-Gerês National

Park). A. P. Dias, M. Pimenta & A. Luís

51 | Comparison of the diversity of waterbirds among four habitats at Sado Estuary: Fishfarm, Saltmarsh,

Abandoned saltpan and Active saltpan. J. C. Pereira & A. C. Pereira


63 | Intraguild predation by Eagle Owls in Europe. R. F. Lourenço & J. E. Rabaça


69 | Ducks and the risk of avian influenza in Portugal. D. Rodrigues, M. E. Figueiredo, A. Fabião & V.



75 | Parasites detected in wild birds admitted in a wildlife rehabilitation centre. F. Martinho & P. C. Melo

AIRO 15     Year 2005

03 | Invasive alien species as a threat to seabird populations: an account of habitat restoration on Ilhéu da

Praia (Graciosa, Açores) Special Protection Area. M. Pitta Groz & J. C. Pereira

11 | Conservation of Puffinus species in the Azores. M. Pitta Groz, L. R. Monteiro, J. C. Pereira, A. G. Silva &

J. A. Ramos

19 | Low-tech and high-tech methods for the study and conservation of Procellariiformes: some examples

from a case study of the Madeiran Storm Petrel (Oceanodroma castro) in the Azores. M. Bolton

29 | Censussing Manx Shearwaters (Puffinus puffinus). C. M. Perrins

37 | Manx Shearwater conservation and proposed rat eradication on the Hebridean islands of Canna &

Sanday, West Scotland. A. Patterson

43 | Large numbers of staging Balearic Shearwater (Puffinus mauretanicus) along the Lisbon coast,

Portugal, during the post-breeding period, June 2004. M. Poot

51 | Which future for the Bulwer’s Petrel in the Azores? J. Bried & K. Bourgeois

57 | Social composition, mass regulation and site-fifelity of migrant Robins (Erithacus rubecula) wintering in a

marginal habitat. P. Catry

63 | Factors influencing the breeding success of the Lesser Kestrel (Falco naumanni) in Portugal. A. Cordeiro, A. Franco & J. Palmeirim

75 | Post-breeding habitats selection of Great Bustard (Otis tarda) in South Portugal. N. Faria

85 | Population status, reproduction and coservation of Osprey (Pandion haliaetus) in La Gomera and El

Hierro, Canary Islands (2003-2004). M. Siverio & B. Rodríguez


91 | Biometrics of Bluethroats (Luscinia svecica) breeding in Central Spain. F. Campos, S. J. Peris & J. L.


Airo 15
AIRO 14     Year 2004

03 | Distribuition, abundance and conservation measures for the Avocet (Recurvirosta avosetta) in Portugal.

T. Catry, I. Catry & M. Lecoq

11 | Population estimate and habitat selection by the Barn Owl (Tylo alba) in Coruche (Santarém, Portugal).

I. Roque & R. Tomé

20 | Is the availability of new nests sites na efficient conservation measure for the Portuguese Lesser Kestrel

population? I. Catry, S. Reis, R. Alcazar, a. Cordeiro, P. Rocha & A. Franco

29 | Abundance, habitat use and diet of the Macaronesian Blackcap (Sylvia atricapilla gularis) on Pico Island,

Azores. V. Neves, J. A. Ramos, J. Pereira & A. G. Silva

41 | Steppe bird community and its relation with the land-use in the Important Bird Area of Vila Fernando / Veiros (Alentejo, Southern Portugal). P. Silva, L. T. Costa & J. P. Silva

55 | Foraging behaviour of breeding Little Tern (Sterna albifrons) at Ria de Aveiro. F. Peste, S. Trigo & A.


63 | Birds in antiquity. A contribution from the zoo-archaeology lab of the IPA. C. M. Pimenta, M. Moreno-

García & S. Davis


79 | Preliminary data on the breeding biology of the Roller (Coracias garrulus) in the Castro Verde SPA. M. I.

Moreira, I. Catry, I. S. Henriques, A. T. Marques & S. Reis

82 | Population status of the Black-bellied Sandgrouse (Pterocles orientalis) in the SPA of Moura-Mourão-

Barrancos. M. S. Cruz & M. C. Pais

89 | Counts of Little Bustard (Tetrax tetrax) in the Campo Branco region during the non-breeding period.P. A. Rocha, J. P. Silva, C. M. Cruz, C. Cruz, R. Cangarato, C. Janeiro, F. Moreira, J. Pedro & A. Delgado

94 | Seabird census along the Figueira da Foz-Aveiro coastline (Portugal) during August/September 2002. J. M. S. Petronilho, J. V. Vingada, M. Ferreira, N. A. C. Paulino, C. Eira, R. A. Costa & P. J. Q. Tenreiro

101 | Some data on Corvidae species in Northeasterm Algarve (Southern Portugal). V. A. Oliveira, R.

Cangarato, S. Coelho, R. F. Lourenço & M. C. Pais

105 | Composition and annual Dynamics of the community of waterbirds of the Natura 2000 site “Dunas de

Mira, Gândara e Gafanhas” (Beira Litoral, Portugal). J. M. S. Petronilho, J. V. Vingada & M. Ferreira

115 | Exotic birds in Quiaios-Mira coast (Beira Litoral, Portugal). J. M. S. Petronilho, J. V. Vingada & J.


121 | Measurements and weights of Spanish Sparrows (Passer hispaniolensis) during the breeding season

in Southern Portugal. P. A. M. Marques, A. F. Marques & L. Vicente

126 | The Barn Owl (Tyto alba) as a breeding species on Boavista and Maio, Cape Verde Islands. F. Siverio,

N. Varo & L. F. López-Jurado

Airo 14
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