Syllable sharing and changes in syllable repertoire size and composition within and between years in the great reed warbler, Acrocephalus arundinaceus Ewa WęgrzynKonrad Leniowski Original Article 11 October 2009 Pages: 255 - 267
Diet and habitat selection in Cantabrian Capercaillie (Tetrao urogallus cantabricus): ecological differentiation of a rear-edge population Beatriz Blanco-FontaoAlberto Fernández-GilMario Quevedo Original Article 11 October 2009 Pages: 269 - 277
Geographical and habitat differences in concentrations of copper, zinc and arsenic in eggshells of the Rook Corvus frugilegus in Poland Grzegorz OrłowskiZbigniew KasprzykowskiRyszard Polechoński Original Article 10 October 2009 Pages: 279 - 286
Divergence in New Holland Honeyeaters (Phylidonyris novaehollandiae): evidence from morphology and feeding behavior Steven MyersGeoffrey BrownSonia Kleindorfer Original Article 09 October 2009 Pages: 287 - 296
Habitat structure versus food abundance: the importance of sparse vegetation for the common redstart Phoenicurus phoenicurus Nicolas MartinezLukas JenniNiklaus Zbinden Original Article 08 October 2009 Pages: 297 - 307
What are we dealing with? An explicit test reveals different levels of taxonomical diagnosability in the Sylvia cantillans species complex Mattia BrambillaSeverino VitulanoEttore Randi Original Article 14 October 2009 Pages: 309 - 315
Response of breeding European Storm Petrels Hydrobates pelagicus to habitat change Bernard CadiouFredéric BioretDelphine Chenesseau Original Article 08 October 2009 Pages: 317 - 327
Seasonal differences in at-sea activity of seabirds underline high energetic demands during the breeding period Nele MarkonesVolker DierschkeStefan Garthe Original Article 17 October 2009 Pages: 329 - 336
Circumscription of a monophyletic family for the tapaculos (Aves: Rhinocryptidae): Psiloramphus in and Melanopareia out Per G. P. EricsonStorrs L. OlsonJon Fjeldså Original Article 14 October 2009 Pages: 337 - 345
Leucocytes in adult burrowing parrots Cyanoliseus patagonus in the wild: variation between contrasting breeding seasons, gender, and individual condition Andreas PlischkePetra QuillfeldtJuan F. Masello Original Article Open access 11 October 2009 Pages: 347 - 354
The effect of benthic prey abundance and size on red knot (Calidris canutus) distribution at an alternative migratory stopover site on the US Atlantic Coast Jonathan B. CohenSarah M. KarpantyBarry R. Truitt Original Article 08 October 2009 Pages: 355 - 364
On the extinction of the Dune Shearwater (Puffinus holeae) from the Canary Islands Juan Carlos RandoJosep Antoni Alcover Original Article 14 October 2009 Pages: 365 - 369
Spring passerine migrants stopping over in the Sahara are not fall-outs Volker SalewskiHeiko SchmaljohannFelix Liechti Original Article Open access 22 October 2009 Pages: 371 - 378
Conspecific-only experience during development reduces the strength of heterospecific song discrimination in Zebra Finches (Taeniopygia guttata): a test of the optimal acceptance threshold hypothesis Dana L. M. CampbellMark E. Hauber Original Article 30 October 2009 Pages: 379 - 389
Ecology and Ethnobiology of the Slender-billed Grackle Quiscalus palustris Paul D. Haemig Original Article 30 October 2009 Pages: 391 - 399
A new Old World vulture (Falconiformes: Accipitridae) from the Miocene of Gansu Province, northwest China Zihui ZhangXiaoting ZhengLianhai Hou Original Article 31 October 2009 Pages: 401 - 408
Mitochondrial DNA diversity of the vulnerable Chinese Egret (Egretta eulophotes) from China Xiaoping ZhouWenzhen FangXiaolin Chen Original Article 13 November 2009 Pages: 409 - 414
How to capture wild passerine species to study baseline corticosterone levels Frédéric AngelierChristopher M. TonraPeter P. Marra Original Article Open access 13 November 2009 Pages: 415 - 422
Initial levels of maternally derived antibodies predict persistence time in offspring circulation Jennifer L. Grindstaff Original Article 16 November 2009 Pages: 423 - 428
Rapid or slow moult? The choice of a primary moult strategy by immature Wood Sandpipers Tringa glareola in southern Africa Magdalena RemisiewiczAnthony J. TreeP. Barry Taylor Original Article 18 November 2009 Pages: 429 - 441
Do captive waterfowl alter their behaviour patterns during their flightless period of moult? Steven J. PortugalRhian IsaacS. James Reynolds Original Article 12 November 2009 Pages: 443 - 448
Morphological sexing of passerines: not valid over larger geographical scales Heike EllrichVolker SalewskiWolfgang Fiedler Original Article Open access 27 November 2009 Pages: 449 - 458
GPS tracking devices reveal foraging strategies of Black-legged Kittiwakes Jana KotzerkaStefan GartheScott A. Hatch Original Article 12 December 2009 Pages: 459 - 467
Element repertoire: change and development with age in Whitethroat Sylvia communis song Thorsten Johannes Skovbjerg BalsbyPoul Hansen Original Article 05 December 2009 Pages: 469 - 476
Within-season divorce in Blue Tits (Cyanistes caeruleus) Alain JacotMihai ValcuBart Kempenaers Original Article Open access 11 December 2009 Pages: 477 - 482
Parental provisioning behaviour in a flock-living passerine, the Vinous-throated Parrotbill Paradoxornis webbianus Jin-Won LeeHee-Yoon KimBen J. Hatchwell Original Article 02 December 2009 Pages: 483 - 490
Extrapair paternity in a German population of the Northern Wheatear (Oenanthe oenanthe) Dagmar KudernatschMartin BuchmannGernot Segelbacher Original Article 08 January 2010 Pages: 491 - 498
The numerical response of breeding Northern Saw-whet Owls Aegolius acadicus suggests nomadism Jeff BowmanDebbie S. BadzinskiRonald J. Brooks Original Article 02 December 2009 Pages: 499 - 506
Video nest monitoring reveals male coloration-dependant nest predation and sex differences in prey size delivery in a bird under high sexual selection Diane Colombelli-NégrelSonia Kleindorfer Original Article 29 November 2009 Pages: 507 - 512
A wild Marsh Warbler × Sedge Warbler hybrid (Acrocephalus palustris × A. schoenobaenus) in Norway documented with molecular markers Jan T. LifjeldGunnhild MarthinsenArild Johnsen Short Note 14 November 2009 Pages: 513 - 517
Response to comments by G. Mayr to my paper “Dinosaur protofeathers: pushing back the origin of feathers into the Middle Triassic?” Theagarten Lingham-Soliar Comment 14 November 2009 Pages: 519 - 521
Response to Lingham-Soliar: dinosaur protofeathers: pushing back the origin of feathers into the Middle Triassic? Gerald Mayr Comment 13 November 2009 Pages: 523 - 524
Isolation and characterization of ten microsatellite loci in Blue-footed (Sula nebouxii) and Peruvian Boobies (Sula variegata) Scott A. TaylorJames A. Morris-PocockVicki L. Friesen Technical Notes 25 November 2009 Pages: 525 - 528
Erratum to: Reduced blood parasite prevalence with age in the Seychelles Warbler: selective mortality or suppression of infection? Kees van OersDavid S. RichardsonJan Komdeur Erratum 29 October 2009 Pages: 529 - 529