An iconic messenger of climate change? Predicting the range dynamics of the European Bee-eater (Merops apiaster) Darius StielsHans-Valentin BastianJan O. Engler Original Article Open access 18 March 2021 Pages: 631 - 644
Moult of overwintering Wood Warblers Phylloscopus sibilatrix in an annual-cycle perspective Crinan JarrettLuke L. PowellBarbara Helm Original Article Open access 15 February 2021 Pages: 645 - 653
Extent and symmetry of tail moult in Amur Falcons Oluwadunsin E. AdekolaDavid G. AllanPeter G. Ryan Original Article 08 March 2021 Pages: 655 - 667
Anvil use for seed consumption by the White-fronted Woodpecker Melanerpes cactorum during summer season with diverse resource availability María Gabriela Núñez MontellanoPatricia Viviana ZelayaPedro G. Blendinger Original Article 04 February 2021 Pages: 669 - 676
Area-restricted search in Magellanic Woodpeckers: importance of tree senescence, forest composition and open habitats Pablo M. VergaraFrancisca Maron-PerezJavier A. Simonetti Original Article 25 March 2021 Pages: 677 - 686
Correction to: Area-restricted search in Magellanic Woodpeckers: importance of tree senescence, forest composition and open habitats Pablo M. VergaraFrancisca Maron-PerezJavier A. Simonetti Correction 17 April 2021 Pages: 687 - 687
Prey, management and landscape requirements of an endangered population of the Woodlark Lullula arborea in Southwest Germany Verena RöschPascal AloisioMartin H. Entling Original Article Open access 14 February 2021 Pages: 689 - 698
Does prey abundance affect prey size selection by the Eagle Owl (Bubo bubo)? Jorge TobajasCarlos RoucoPablo Ferreras Original Article 04 March 2021 Pages: 699 - 708
Great and blue tit laying dates vary with fine-scale variation in local tree composition but not tree budburst Erik MatthysenFrank AdriaensenKris Vandekerkhove Original Article 07 March 2021 Pages: 709 - 722
Seasonal dynamics in the exploitation of natural carcasses and supplementary feeding stations by a top avian scavenger Volen ArkumarevDobromir DobrevStoycho Stoychev Original Article 19 February 2021 Pages: 723 - 735
Short-wavelength visual sensitivity and sexual differences in plumage colouration of ovenbirds (Aves: Furnariinae) Ana S. BarreiraMuir D. EatonCecilia Kopuchian Original Article 20 February 2021 Pages: 737 - 748
Can antibody-based assays consistently detect differences in feather corticosterone? Clare Parker FischerMaren N. VitousekL. Michael Romero Original Article 01 March 2021 Pages: 749 - 758
Does parental heart rate affect embryonic heart rate during incubation? An experiment in Common Terns Sterna hirundo Nathalie KürtenKristin PieningOscar Vedder Original Article Open access 12 March 2021 Pages: 759 - 764
The wing morphology traits of resident birds that spend a large amount of time per day flying are similar to those of migrant birds Steven W. Evans Original Article 02 March 2021 Pages: 765 - 778
Functional morphology of the forelimb musculature reflects flight and foraging styles in aquatic birds Fernanda Bribiesca-ContrerasBen ParslewWilliam I. Sellers Original Article Open access 18 March 2021 Pages: 779 - 793
Using individual capture data to reveal large-scale patterns of social association in birds Katie LaBarberaJosh C. Scullen Original Article 26 February 2021 Pages: 795 - 811
Contrasting use of space by two migratory Afro-Palearctic warblers on their African non-breeding grounds Dina Abdelhafez Ali MostafaMikkel WillemoesKasper Thorup Original Article 11 April 2021 Pages: 813 - 821
Highly diversified habitats and resources influence habitat selection in wintering shorebirds Clément JourdanJérôme FortPierrick Bocher Original Article 12 March 2021 Pages: 823 - 838
Win – and stay, but not too long: cavity selection by Boreal Owls to minimize nest predation by Pine Marten Geir A. Sonerud Original Article Open access 13 March 2021 Pages: 839 - 855
Nidicolous beetle species richness is driven by Barn Owl’s nests occupancy and landscape structure Vivien CosandeyRobin SéchaudAlexandre Roulin Original Article Open access 09 March 2021 Pages: 857 - 864
No evidence for a role of trills in male response to territorial intrusion in a complex singer, the Thrush Nightingale Abel SouriauRadka ReifováTereza Petrusková Original Article 03 April 2021 Pages: 865 - 878
Correction to: No evidence for a role of trills in male response to territorial intrusion in a complex singer, the Thrush Nightingale Abel SouriauRadka ReifováTereza Petrusková Correction 30 April 2021 Pages: 879 - 879
Singing in a fragmented landscape: wrens in a tropical dry forest show sex differences in the effects of neighbours, time of day, and time of year K. C. OwenD. J. Mennill Original Article 09 April 2021 Pages: 881 - 893
Contrasting patterns of natal dispersal of a south temperate House Wren population at local and regional scales Mariana E. CarroPaulo E. LlambíasGustavo J. Fernández Original Article 17 April 2021 Pages: 895 - 907
Disentangling the taxonomic status and phylogeographic structure of Marmora’s (Curruca sarda) and Balearic Warbler (Curruca balearica): a genetic multi-marker approach Davide NespoliIrene PellegrinoMattia Brambilla Original Article Open access 18 April 2021 Pages: 909 - 918
A phasianid bird from the Pleistocene of Tainan: the very first avian fossil from Taiwan Cheng-Hsiu TsaiGerald Mayr Original Article Open access 14 April 2021 Pages: 919 - 923
Annual survival estimates of Taiga Anser fabalis and Tundra Bean Geese A. serrirostris wintering in The Netherlands, 1967–1987 Anthony D. FoxMorten FrederiksenHenk P. van der Jeugd Short Note 04 April 2021 Pages: 925 - 929
Acorn storage in tree cavities by Eurasian jay (Garrulus glandarius L.) Aleksandra WróbelPrzemysław KurekDorota Dobrowolska Short Communication Open access 28 April 2021 Pages: 931 - 934
Correction to: Urbanisation and nest building in birds: a review of threats and opportunities S. James ReynoldsJuan D. Ibáñez‑ÁlamoMark C. Mainwaring Correction 05 April 2021 Pages: 935 - 935