1. Morphological and behavioural adaptations to feed on nectar: how feeding ecology determines the diversity and composition of hummingbird assemblages

   • Stefan Abrahamczyk
   • Michael Kessler

   Review 05 December 2014 Pages: 333 - 347

   

2. Dispersal in an extensive continuous forest habitat: Marsh Tit Poecile palustris in the Białowieża National Park

   • Tomasz Wesołowski

   Original Article Open access 11 September 2014 Pages: 349 - 361

   

3. Phylogenetic relationships and taxonomic status of the endemic Socorro Warbler (Setophaga pitiayumi graysoni)

   • Edward L. Evans III
   • Juan E. Martínez-Gómez
   • Ravinder N. M. Sehgal

   Original Article 15 November 2014 Pages: 363 - 370

   

4. Blood parasite prevalence in the Bluethroat is associated with subspecies and breeding habitat

   • Aleš Svoboda
   • Gunnhild Marthinsen
   • Arild Johnsen

   Original Article 15 November 2014 Pages: 371 - 380

   

5. Spatio-temporal variation in nestling sex ratio among the Black Stork Ciconia nigra populations across Europe

   • Annika Konovalov
   • Katrin Kaldma
   • Ülo Väli

   Original Article 14 November 2014 Pages: 381 - 387

   

6. Shortening day length as a previously unrecognized selective pressure for early breeding in a bird with long parental care

   • Marcin Podlaszczuk
   • Zbigniew Wojciechowski
   • Agnieszka Wojciechowska

   Original Article Open access 23 November 2014 Pages: 389 - 396

   

7. Contrasting population trends at seabirds colonies: is food limitation a factor in Norway?

   • Emeline Pettex
   • Robert T. Barrett
   • David Grémillet

   Original Article 15 November 2014 Pages: 397 - 406

   

8. Microclimate and microhabitat selection by the Alpine Rock Ptarmigan (Lagopus muta helvetica) during summer

   • Linda Visinoni
   • Claire Agnès Pernollet
   • Lukas Jenni

   Original Article 23 November 2014 Pages: 407 - 417

   

9. Male pheomelanin pigmentation and breeding onset in Barn Swallows Hirundo rustica gutturalis

   • Emi Arai
   • Masaru Hasegawa
   • Kazumasa Wakamatsu

   Original Article 23 December 2014 Pages: 419 - 427

   

10. The relationship between parasites and spleen and bursa mass in the Icelandic Rock Ptarmigan Lagopus muta

    • Ute Stenkewitz
    • Ólafur K. Nielsen
    • Gunnar Stefánsson

    Original Article 16 December 2014 Pages: 429 - 440

    

11. Skeletal morphology of the middle Eocene swift Scaniacypselus and the evolutionary history of true swifts (Apodidae)

    • Gerald Mayr

    Original Article 29 November 2014 Pages: 441 - 450

    

12. Resident but not transient Eurasian Siskins reduce body mass in response to increasing predation risk: a natural experiment

    • Jordi Pascual
    • Juan Carlos Senar

    Original Article 16 December 2014 Pages: 451 - 456

    

13. Non-native spruce plantations represent a suitable habitat for Tengmalm’s Owl (Aegolius funereus) in the Czech Republic, Central Europe

    • Markéta Zárybnická
    • Jan Riegert
    • Karel Št’astný

    Original Article 16 December 2014 Pages: 457 - 468

    

14. The roles of environmental and geographic variables in explaining the differential wintering distribution of a migratory passerine in southern Europe

    • Juan Arizaga
    • Gerard Bota
    • Pablo Vera

    Original Article 16 December 2014 Pages: 469 - 479

    

15. Is it possible to acoustically identify individuals within a population?

    • Michał Budka
    • Lucyna Wojas
    • Tomasz S. Osiejuk

    Original Article Open access 23 December 2014 Pages: 481 - 488

    

16. Tree-cavity availability and selection by a large-bodied secondary cavity-nester: the Military Macaw

    • Sylvia Margarita de la Parra-Martínez
    • Katherine Renton
    • Luis Guillermo Muñoz-Lacy

    Original Article 23 December 2014 Pages: 489 - 498

    

17. Time use and foraging behaviour in pre-breeding dabbling ducks Anas spp. in sub-arctic Norway

    • Céline Arzel
    • Johan Elmberg

    Original Article 07 January 2015 Pages: 499 - 513

    

18. Solar/Argos PTTs contradict ring-recovery analyses: Woodcocks wintering in Spain are found to breed further east than previously stated

    • Juan Arizaga
    • Ariñe Crespo
    • José A. Pérez

    Original Article 16 December 2014 Pages: 515 - 523

    

19. Bill size correlates with telomere length in male American Redstarts

    • Frédéric Angelier
    • Carol M. Vleck
    • Peter P. Marra

    Original Article 03 February 2015 Pages: 525 - 531

    

20. Geographic variation in the calls of the Common Cuckoo (Cuculus canorus): isolation by distance and divergence among subspecies

    • Chentao Wei
    • Chenxi Jia
    • Wei Liang

    Original Article 13 January 2015 Pages: 533 - 542

    

21. Increasing protandry in the spring migration of the Pied Flycatcher (Ficedula hypoleuca) in Central Europe

    • A. Harnos
    • Á. Nóra
    • T. Csörgő

    Short Note 23 December 2014 Pages: 543 - 546

    

22. Summit metabolic rate exhibits phenotypic flexibility with migration, but not latitude in a neotropical migrant, Parkesia noveboracensis

    • Keely R. Corder
    • Paul J. Schaeffer

    Short Note 03 February 2015 Pages: 547 - 550

    

23. Heterospecific intrusions, synchronous fleeing, and nest attendance in a weaverbird colony

    • Bobby Habig
    • David C. Lahti

    Short Note 17 December 2014 Pages: 551 - 555