Morphological and behavioural adaptations to feed on nectar: how feeding ecology determines the diversity and composition of hummingbird assemblages Stefan AbrahamczykMichael Kessler Review 05 December 2014 Pages: 333 - 347
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
Phylogenetic relationships and taxonomic status of the endemic Socorro Warbler (Setophaga pitiayumi graysoni) Edward L. Evans IIIJuan E. Martínez-GómezRavinder N. M. Sehgal Original Article 15 November 2014 Pages: 363 - 370
Blood parasite prevalence in the Bluethroat is associated with subspecies and breeding habitat Aleš SvobodaGunnhild MarthinsenArild Johnsen Original Article 15 November 2014 Pages: 371 - 380
Spatio-temporal variation in nestling sex ratio among the Black Stork Ciconia nigra populations across Europe Annika KonovalovKatrin KaldmaÜlo Väli Original Article 14 November 2014 Pages: 381 - 387
Shortening day length as a previously unrecognized selective pressure for early breeding in a bird with long parental care Marcin PodlaszczukZbigniew WojciechowskiAgnieszka Wojciechowska Original Article Open access 23 November 2014 Pages: 389 - 396
Contrasting population trends at seabirds colonies: is food limitation a factor in Norway? Emeline PettexRobert T. BarrettDavid Grémillet Original Article 15 November 2014 Pages: 397 - 406
Microclimate and microhabitat selection by the Alpine Rock Ptarmigan (Lagopus muta helvetica) during summer Linda VisinoniClaire Agnès PernolletLukas Jenni Original Article 23 November 2014 Pages: 407 - 417
Male pheomelanin pigmentation and breeding onset in Barn Swallows Hirundo rustica gutturalis Emi AraiMasaru HasegawaKazumasa Wakamatsu Original Article 23 December 2014 Pages: 419 - 427
The relationship between parasites and spleen and bursa mass in the Icelandic Rock Ptarmigan Lagopus muta Ute StenkewitzÓlafur K. NielsenGunnar Stefánsson Original Article 16 December 2014 Pages: 429 - 440
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
Resident but not transient Eurasian Siskins reduce body mass in response to increasing predation risk: a natural experiment Jordi PascualJuan Carlos Senar Original Article 16 December 2014 Pages: 451 - 456
Non-native spruce plantations represent a suitable habitat for Tengmalm’s Owl (Aegolius funereus) in the Czech Republic, Central Europe Markéta ZárybnickáJan RiegertKarel Št’astný Original Article 16 December 2014 Pages: 457 - 468
The roles of environmental and geographic variables in explaining the differential wintering distribution of a migratory passerine in southern Europe Juan ArizagaGerard BotaPablo Vera Original Article 16 December 2014 Pages: 469 - 479
Is it possible to acoustically identify individuals within a population? Michał BudkaLucyna WojasTomasz S. Osiejuk Original Article Open access 23 December 2014 Pages: 481 - 488
Tree-cavity availability and selection by a large-bodied secondary cavity-nester: the Military Macaw Sylvia Margarita de la Parra-MartínezKatherine RentonLuis Guillermo Muñoz-Lacy Original Article 23 December 2014 Pages: 489 - 498
Time use and foraging behaviour in pre-breeding dabbling ducks Anas spp. in sub-arctic Norway Céline ArzelJohan Elmberg Original Article 07 January 2015 Pages: 499 - 513
Solar/Argos PTTs contradict ring-recovery analyses: Woodcocks wintering in Spain are found to breed further east than previously stated Juan ArizagaAriñe CrespoJosé A. Pérez Original Article 16 December 2014 Pages: 515 - 523
Bill size correlates with telomere length in male American Redstarts Frédéric AngelierCarol M. VleckPeter P. Marra Original Article 03 February 2015 Pages: 525 - 531
Geographic variation in the calls of the Common Cuckoo (Cuculus canorus): isolation by distance and divergence among subspecies Chentao WeiChenxi JiaWei Liang Original Article 13 January 2015 Pages: 533 - 542
Increasing protandry in the spring migration of the Pied Flycatcher (Ficedula hypoleuca) in Central Europe A. HarnosÁ. NóraT. Csörgő Short Note 23 December 2014 Pages: 543 - 546
Summit metabolic rate exhibits phenotypic flexibility with migration, but not latitude in a neotropical migrant, Parkesia noveboracensis Keely R. CorderPaul J. Schaeffer Short Note 03 February 2015 Pages: 547 - 550
Heterospecific intrusions, synchronous fleeing, and nest attendance in a weaverbird colony Bobby HabigDavid C. Lahti Short Note 17 December 2014 Pages: 551 - 555