Online supplementary material

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Martin Beal, Patrik Byholm, Ulrik Lötberg, Tom J. Evans, Kozue Shiomi & Susanne Åkesson: Habitat selection and foraging site fidelity in Caspian Terns (Hydroprogne caspia) breeding in the Baltic Sea — Ornis Fennica 98: 128–141.

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Fabio Balotari-Chiebao, Jari Valkama & Patrik Byholm: Assessing the vulnerability of breeding bird populations to onshore wind-energy developments in Finland — Ornis Fennica 98: 59–73.

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Aleksi Lehikoinen, Alison Johnston & Dario Massimino: Climate and land use changes: similarity in range and abundance changes of birds in Finland and Great Britain — Ornis Fennica 98: 1–15.

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Marta Witkowska & Wlodzimierz Meissner: Sexual dimorphism in size and plumage in adult Curlew Sandpipers (Calidris ferruginea) migrating in autumn through the Baltic Sea region — Ornis Fennica 97: 186–199.

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Ülo Väli & Piia Katharina Vaan: Greenish Warbler (Phylloscopus trochiloides viridanus): An overlooked indicator of old-growth forest? — Ornis Fennica 97: 165–176.

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Juha A. Markkola & Risto T. Karvonen: Changing environmental conditions and structure of a breeding population of the threatened Lesser White-fronted Goose (Anser erythropus L.). — Ornis Fennica 97: 113–130.

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Beneharo Rodríguez, Airam Rodríguez, Juan Antonio Lorenzo & Juan Manuel Martínez: The Macaronesian Sparrowhawk diet in native and exotic forests. — Ornis Fennica 97: 64–78.

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Juan C. Alonso, Luis M. Bautista & Javier A. Alonso: Sexual size dimorphism in the Common Crane, a monogamous, plumage-monomorphic bird. — Ornis Fennica 96: 194–204.

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Mark H. Hancock, Hannah J. Robson, Trevor D. Smith & Andrew Douse: Spatial and temporal patterns of foraging activity by breeding Common Scoters (Melanitta nigra) in Scotland. — Ornis Fennica 96: 124–141.

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Nader Habibzadeh & Tobias Ludwig 2019: Ensemble of small models for estimating potential abundance of Caucasian grouse (Lyrurus mlokosiewiczi) in Iran. — Ornis Fennica 96: 77–89.

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Katarzyna Stepniewska, Agnieszka Ozarowska, Przemys³aw Busse, Pavel Zehtindjiev, Mihaela Ilieva, Oksana Hnatyna & Wlodzimierz Meissner 2018: Fuelling strategies differ among juvenile Sedge and Reed Warblers along the eastern European flyway during autumn migration. — Ornis Fennica 95: 103–114.

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Veli-Matti Pakanen 2018: Large scale climate affects the timing of spring arrival but local weather determines the start of breeding in a northern Little Tern (Sternula albifrons) population. — Ornis Fennica 95: 178–184.

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Noora Andersson, Markus Piha, Kalle Meller, Kaisa Välimäki & Aleksi Lehikoinen 2018: Variation in body condition of songbirds during breeding season in relation to sex, migration strategy and weather.— Ornis Fennica 95: 70–81.

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Rauno A. Yrjölä, Antti Tanskanen, Hannu Sarvanne, Jorma Vickholm & Aleksi Lehikoinen 2018: Can common forest bird species tolerate disturbances in neighbouring areas? A case study of the Vuosaari Harbour construction in southern Finland. — Ornis Fennica 95: 49–60.

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Ainars Aunins & Andris Avotins 2018: Impact of military activities on bird species considered to benefit from disturbances: an example from an active military training area in Latvia. — Ornis Fennica 95: 15–31.

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Andrea Santangeli, Stuart H. M. Butchart, Mark Pogson, Astley Hastings, Pete Smith, Marco Girardello & Atte Moilanen 2018: Mapping the global potential exposure of soaring birds to terrestrial wind energy expansion. — Ornis Fennica 95: 1–14.

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Rauno A. Yrjölä, Sari Holopainen, Raimo Pakarinen, Sini Tuoriniemi, Matti Luostarinen, Markku Mikkola-Roos, Petri Nummi & Veli-Matti Väänänen 2017: The Barnacle Goose Branta leucopsis in the archipelago of southern Finland – population growth and nesting dispersal. — Ornis Fennica 94: 161–171.

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Marco Gustin, Giuseppe Giglio, Stefania Caterina Pellegrino, Annagrazia Frassanito & Alessandro Ferrarini 2017: New evidences confirm that during the breeding season Lesser Kestrel is not a strictly diurnal raptor. — Ornis Fennica 94: 194–199.

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Dominique A. Potvin, Diego Pavón-Jordán & Aleksi Lehikoinen 2017: To filter or not to filter: assessing the exclusion of hunting and persecution data in ringing recovery studies. — Ornis Fennica 94: 125–140.

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Supplementary table 4 XLSX

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Aleksi Lehikoinen, Jarkko Santaharju & Anders Pape Møller 2017: Sex-specific timing of autumn migration in birds: the role of sexual size dimorphism, migration distance and differences in breeding investment. — Ornis Fennica 94: 53–65.

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Raimo Virkkala 2016: Variation in population trends and spatial dynamics of waterbirds in a boreal lake complex. — Ornis Fennica 93: 197–211.

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Risto Tornberg, Veli-Matti Korpimäki, Pentti Rauhala & Seppo Rytkönen 2016: Peregrine Falcon (Falco peregrinus) may affect local demographic trends of wetland bird prey species. — Ornis Fennica 93: 172–185.

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Lars Bo Jacobsen, Monika Chrenková, Peter Sunde, Martin Šálek & Kasper Thorup 2016: Effects of food provisioning and habitat management on spatial behaviour of Little Owls during the breeding season. — Ornis Fennica 93: 121–129.

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Aleksi Lehikoinen, Sara Fraixedas, Daniel Burgas, Heikki Eriksson, Heikki Henttonen, Hanna Laakkonen, Petteri Lehikoinen, Joona Lehtomäki, Jenni Leppänen, Sanna Mäkeläinen, Jukka Niemimaa, Mari Pihlajaniemi, Jarkko Santaharju & Kaisa Välimäki 2016: The impact of weather and the phase of the rodent cycle on breeding populations of waterbirds in Finnish Lapland. — Ornis Fennica 93: 31–46.

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Svein Dale & Ellen T. Andreassen 2016: Population decline of the Siberian Tit (Poecile cinctus) in southern Norway and an assessment of possible causes. — Ornis Fennica 93: 77–87.

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Line H. Andersen, Peter Sunde, Volker Loeschcke & Cino Pertoldi 2015: A population viability analysis on the declining population of Little Owl (Athene noctua) in Denmark using the stochastic simulation program VORTEX. — Ornis Fennica 92: 123–143.

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Boris Droz, Robin Arnoux, Emmanuel Rey, Thierry Bohnenstengel & Jacques Laesser 2015: Characterizing the habitat requirements of the Common Redstart (Phoenicurus phoenicurus) in moderately urbanized areas. — Ornis Fennica 92: 112–122.

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Robert Moss & Vladimir Borchtchevski 2015: Age structure and movement of Capercaillie (Tetrao urogallus) males in NW Russia – a two-compartment model. — Ornis Fennica 92: 1–14.

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Thomas Bregnballe, Ole Amstrup, Thomas E. Holm, Preben Clausen & Anthony D. Fox 2014: Skjern River Valley, Northern Europe’s most expensive wetland restoration project: benefits to breeding waterbirds. — Ornis Fennica 91: 231–243.

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Jochen Bellebaum, Jan Kube, Axel Schulz, Henrik Skov & Helmut Wendeln 2014: Decline of Long-tailed Duck Clangula hyemalis numbers in the Pomeranian Bay revealed by two different survey methods. — Ornis Fennica 91: 129–137.

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Heimo Mikkola & Risto Tornberg 2014: Sex-specific diet analysis of the Eurasian Eagle Owl in Finland. — Ornis Fennica 91: 195–200.

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Marco Gustin, Alessandro Ferrarini, Giuseppe Giglio, Stefania Caterina Pellegrino & Annagrazia Frassanito 2014: First evidence of widespread nocturnal activity of Lesser Kestrel (Falco naumanni) in Southern Italy. — Ornis Fennica 91: 256–260.

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Martin Kornan 2013: Breeding bird assemblage dynamics of a primaeval temperate mixed forest in the Western Carpathians (Slovakia): support for pluralistic community concept. — Ornis Fennica 90: 151–177.

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Lykke Pedersen, Marten Geertsma & Anders P. Tøttrup 2012: Prey diversity is affected by climate and differs between age classes in the Red-backed Shrike (Lanius collurio). — Ornis Fennica 89: 99–108.

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Bo Söderström 2008: Unusual imitation and song syntax in a Chaffinch Fringilla coelebs during pre-breeding season. — Ornis Fennica 85: 33–36.

All recordings are from the study site near Båstad (56°25’N, 12°52’E), Scania, southern Sweden. The Chaffinch songs were recorded on 8 April 2004. The journal thanks Dr. Andreas Lindén (University of Helsinki, Finland) for technical editing of the original files.

Chaffinch song nr 1 MP3

Chaffinch song nr 2 MP3

Chaffinch song nr 3 MP3

Wren song MP3

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