Ibis

Article	Citations
BOU Page	125
Large‐scale depth‐related seasonal distribution patterns of a benthic‐feeding sea duck in two contrasting marine systems	101
Extreme drought affects exploratory behaviour and use of agricultural habitat in wintering Greater White‐fronted Geese ( Anser albifrons )	66
British Ornithologists’ Union Records Committee (BOURC): 57th Report (January 2025)	46
Book Review	45
A new species of nightjar (Caprimulgus) from Timor and Wetar, Lesser Sunda Islands, Wallacea	41
Re‐assessing the phylogenetic status and evolutionary relationship of Forest Owlet ( Athene blewitti (Hume 1873)) using genomic data	36
Competitive events during nest‐building influence offspring growth and behaviour, but not testosterone deposition in the egg yolk in Western Bluebirds (Sialia mexicana)	30
Optimization of passive acoustic bird surveys: a global assessment of BirdNET settings	27
Simultaneous passive acoustic monitoring uncovers evidence of potentially overlooked temporal variation in an Amazonian bird community	25
The adaptive function of construction of multiple non‐breeding nests in birds	25
Monitoring wader breeding productivity	24
Similar survival of birds between wet and seasonally dry Neotropical environments	23
An automated workflow that combines sound‐based bird identification and localization	22
Issue Information	22
Book Reviews	19
Variation in mesopredator abundance and nest predation rate of the endangered Strange‐tailed Tyrant (Alectrurus risora)	17
Using citizen science image analysis to measure seabird phenology	16
Book Reviews	15
Acknowledgement of Reviewers	15
Investigating connectivity and seasonal differences in wind assistance in the migration of Common Sandpipers	15
BOU Page	15
Source amplitude increases with body‐mass across avian genera	14
No detrimental effects of wing‐harnessed GPS devices on the breeding performance of Yellow‐legged Gulls (Larus michahellis): A multi‐colony evaluation	14
Nest reliefs in a cryptically incubating shorebird are quick, but vocal	14

Song complexity is associated with habitat quality in an upland passerine	13
Using satellite tracking to assess the use of protected areas and alternative roosts by Whooper and Bewick's Swans	13
The potential for climate change to intensify nest‐site competition between two sympatric owl species	12
Using acoustic indices to detect interspecific bird interactions and behaviour	12
Demography of Common Swifts (Apus apus) breeding in the UK associated with local weather but not aphid biomass	12
Environmental drivers of gadfly petrel vagrancy in the Southwest Pacific	12
Issue Information	12
DNA metabarcoding complements but does not replace direct observations of penguin predation by corvids	12
Spatio‐temporal differences in the diet and trophic ecology of Kelp Gulls (Larus dominicanus) in South Africa	11
British Ornithologists Union: Janet Kear Union Medal	11
The structural function of the bubbling call of the female common cuckoo (Cuculus canorus)	11
Factors determining nest‐site selection of surface‐nesting seabirds: a case study on the world's largest pelagic bird, the Wandering Albatross (Diomedea exulans)	11
Spatial patterns of local dialects of the declining Corn Bunting ( Emberiza calandra ) in three regions with different population densities and small‐sca	10
Unexpected diversity of alternative reproductive tactics revealed in Water Rails ( Rallus aquaticus )	10
Factors determining persistent asymmetry and egg shape in birds: A hypothesis	10
Essential steps for establishing a large‐scale passive acoustic monitoring for an elusive forest bird species: the Eurasian Woodcock ( Scolopax rusticola	10
Storm events will simultaneously reduce foraging opportunities and affect movements of Red Knots ( Calidris canutus ) in the intertidal Wadden Sea	10
Comparative support for the social complexity hypothesis in the calls of two closely related species – Tufted Titmice Baeolophus bicolor and Black‐creste	10
Estimating Little Penguin population sizes using automated acoustic monitoring and citizen science	10
Nest attachment, rather than nest type, correlates with passerine bird brain size	10
Absence of negative effect of GPS‐tags on survival and breeding success in a long‐lived territorial raptor	10
Foraging niche partitioning within a recently established guild of falcons	9
Acclimatization length and post‐release spatial cohesion in translocated Griffon Vultures ( Gyps fulvus)	9
Welcome aboard: are birds migrating across the Mediterranean Sea using ships as stopovers during adverse weather conditions?	9
Erratum	9
British Ornithologists' Union – Early Professional Award 2026	9
Connection between ecological niche changes and population trends in the Eurasian Skylark (Alauda arvensis) breeding in lowland and mountain areas of Southern Europe	9
Split moult: a response to time constraints during the main moult period	9
Nest survival of threatened Eurasian Curlew (Numenius arquata) breeding at low densities across a human‐modified landscape	9
	9
Variability of a consistent trait: The size of the white wing patch in European Stonechats (Saxicola rubicola rubicola)	9
The ongoing narrative of Ivory‐billed Woodpecker rediscovery and support for declaring the species extinct	9
Bird deterrent measures at a landfill decreased the productivity of a dependent population of White Stork ( Ciconia ciconia )	9
Species characteristics predict the effectiveness of avian survey methods in an Afromontane sky‐island	9
	9
Artificial light alters spatial and temporal habitat use by a crepuscular aerial insectivore	9
Acknowledgement of Reviewers	8
Distinct bird communities in forests and fruit farms of Caatinga landscapes	8
Space–time home‐range estimates and resource selection for the Critically Endangered Philippine Eagle on Mindanao	8
Acknowledgement of Reviewers	8
	8
Dynamic changes in the avian gut microbiome in response to diverse lifestyles	8
Variation in nest‐site occupancy and breeding outcome in a threatened Subantarctic raptor	8
Thermal effects of plumage coloration	8
The importance of wetland habitat area for waterbird species‐richness	8
British Ornithologists' Union Records Committee (BOURC): 58th Report (January 2026)	8
The effect of conservation interventions on the abundance of breeding waders within nature reserves in the United Kingdom	8
Stable isotope data indicate origins of mislabelled historical bird specimens	7
The influence of sample size on two approaches to estimate Black Grouse Lyrurus tetrix population size using non‐invasive sampling methods	7
BOU Page	7

Soft song provokes stronger aggressive responses than broadcast song in the Plain Laughingthrush (Pterorhinus davidi)	7
	7
Niche modelling reveals conservation challenges and priorities for the threatened Pampas Meadowlark in South American agroecosystems	7
Field‐based evidence of impaired sperm quality associated with conventional farming in two passerine birds	7
Unlocking avian museum collections to enable and advance environmental change research	7
British Ornithologists' Union – Early Professional Award 2025	7
Estimating the mass of the Great Auk (Pinguinus impennis) and its egg	7
Temporal constraints influence reproductive characteristics that are related to the pace‐of‐life continuum in geese	7
Causes of vagrancy of North Asian passerines in western Europe	7
British Ornithologists’ Union Records Committee (BOURC): 56th Report (January 2024)	7
Irruptions of crossbills Loxia spp. in northern Europe – patterns and correlations with seed production by key and non‐key conifers	7
Non‐native parrot species expand the trait space of avian communities by filling empty niches in urban areas	7
Issue Information	6
Acoustic niche partitioning among seven cuckoo species in a forest in eastern China	6
Functions of avian elongated tails, with suggestions for future studies	6
Divergent foraging habitat preferences between summer‐breeding and winter‐breedingProcellariapetrels	6
Variable social organization and breeding system of a social parrot revealed by genetic analysis	6
	6
Citizen science data confirm that expanding non‐breeding distributions of goose and swan species correlate with their increasing abundance	6
Morphological differences between wild and game‐farm Mallards (Anas platyrhynchos) in North America	6
Inadequate reproductive success is a potential cause of Spotted Flycatcher ( Muscicapa striata ) population decline in England	6
Riparian forests and open landscapes in the West African Sahel are key wintering habitats for the threatened European Turtle‐dove (Streptopelia turtur)	6
The Red‐billed Leiothrix (Leiothrix lutea): a new invasive species for Britain?	6
Effects of sex and sampling site on the relative proportion of pesticides in uropygial gland secretions of European Blackbirds (Turdus merula)	6
Reproductive consequences of mate retention and divorce in a short‐lived migratory passerine	6
Book Review	6
Challenges in population monitoring: Bar‐tailed Godwits ( Limosa lapponica ) on the East Atlantic Flyway defy assumed population structure	6
Issue Information	6
Contents	5
Natal philopatry, dispersal and age of first breeding in relation to size and sex of Arctic Terns ( Sterna paradisaea )	5
Identifying the winter grounds of the recently described Barbary Reed Warbler (Acrocephalus baeticatus ambiguus)	5
Nesting and post‐fledging predation risk influence diel patterns of songbird fledging	5
Simulated fireworks disrupt behaviour, but apparently not glucose or corticosterone levels in captive Atlantic canaries Serinus canaria	5
Contents	5
Behavioural responses are associated with mortality and mobility after reintroduction in the endangered Yellow Cardinal	5
Using model‐based distance sampling to estimate decadal population change in Northern Gannets (Morus bassanus) across periods spanned by different at‐sea survey methods	5
Wintering area and experience effects on spring migration strategies, timing and breeding success in Icelandic‐nesting Common Scoters (Melanitta nigra)	5
Long‐term increase in female body condition and its effect on reproduction in two European red‐listed species, Common Pochard (Aythya ferina) and Tufted Duck (Aythya fuligula)	5
Assessing long‐term dynamics of non‐breeding Brown Pelican (Pelecanus occidentalis) populations using Christmas Bird Count data	5
Population genetics and phylogeography of North American Merlins (Falco columbarius) in thepost‐DDT era	5
Disturbance‐dependent Yellow‐legged Gull (Larus michahellis) predation on Larid chicks decreases with chick age	5
A distinct new species ofZosteropswhite‐eye from the Sulawesi region, Indonesia	5
Book Review	5
Erratum	5
Life in the fast and slow lanes: contrasting timing of annual cycle events in high‐ and mid‐latitude breeding Whooper Swans (Cygnus cygnus)	5
Temperature sensitivity of breeding phenology and reproductive output of the Common Redstart ( Phoenicurus phoenicurus )	5
Seasonal, environmental and individual determinants of double‐brooding in the White‐throated Dipper ( Cinclus cinclus )	5
Generative‐AI policies vary widely across top ornithology journals	5
Ski‐pistes can compensate for the climate change‐driven loss of bird communities of avalanche tracks in the Alps	5
Conservation and management implications of the effects of wildfire on a threatened Eastern Iberian Reed Bunting (Emberiza schoeniclus witherbyi) population	5
Non‐breeding home range and habitat use by European Pied Flycatcher ( Ficedula hypoleuca ) in northwest Liberia: apparent resilience to forest degradatio	4
GPS tracking of the two subspecies of the eastern buzzard (Buteo japonicus) reveals a migratory divide along the Sea of Japan	4
Experience increases defensive responses of White‐fronted Woodpeckers towards the invasive European Starling	4
Free‐living Black‐tailed Godwits maintain constant intake rates across varying grassland habitat conditions by adjusting their foraging behaviour	4
The need for a flyway approach in defining the onset of prenuptial migration of huntable bird species across Europe	4
Ringing, tracking and counting data reveal five wintering patterns in European Common Shelducks	4
A Neolithic rock engraving apparently showing a Great Auk being captured	4
Issue Information	4
Fruit abundance may fine‐tune timing of reproduction of the Chilean Elaenia (Elaenia chilensis), a long‐distance migratory bird in South America	4
Nest clustering correlates with breeding phenology rather than female relatedness in Red‐breasted Mergansers (Mergus serrator)	4
Inferred costs and functional consequences of stone morphometry in the stone‐carrying displays of Black Wheatear (Oenanthe leucura)	4
British Ornithologists' Union – Godman Salvin Prize	4
Using empirical data analysis and expert opinion to identify farmland‐associated bird species from their habitat associations	4
Linking eBird data with high spatiotemporal remote sensing products to estimate occupancy of bird populations across the island of Ireland	4
Vocal individuality measures reveal spatial and temporal variation in roding behaviour in Woodcock (Scolopax rusticola)	4
Perceived risks and rewards of foraging sites strongly affect density and condition of non‐breeding Hudsonian Godwits	4
Urban and coastal breeding lesser black‐backed gulls (Larus fuscus) segregate by foraging habitat	4
Moult phenology advances under hot or dry conditions for two passerines across 16 years in a Mediterranean climate	4
Peter J. Jones 1945–2024	4
Multi‐scale habitat overlap in two broad‐ranged sympatric Neotropical forest eagles reveals shared environmental space and habitat use	4
A diet perspective on the impact of the COVID ‐19 lockdown on urban bird assemblages	4
Corrigendum	4
An a priori assessment of the impact of harvesting from five wild populations for conservation translocations	4
British Ornithologists’ Union – Early Professional Award 2024	4
Reducing bias in shorebird nest survival rates across a large Arctic landscape	4
Current and future effectiveness of protected areas for the conservation of endemic owls from the Atlantic Forest	3
Use and definitions of the terms arena, lek and court in describing avian courtship sites	3
Multimodal signalling in manakins: lack of correlated evolution between acoustic, visual and behavioural traits	3
Global range dynamics of the Bearded Vulture (Gypaetus barbatus) from the Last Glacial Maximum to climate change scenarios	3
Connectivity between breeding sites, wintering areas, and migration routes in Common Terns ( Sterna hirundo ) breeding in the Western Palaearctic	3

Moult is associated with higher diversity of food items in the diet of Common Bulbuls (Pycnonotus barbatus) in Cameroon	3
Habitat partitioning and spatial segregation at multiple scales promotes year‐round coexistence in a guild of forest songbirds	3
Issue Information	3
Bird genetic databases need improved curation and error reporting to NCBI	3
Diel and seasonal variation of Striped Cuckoo (Tapera naevia) vocalizations revealed using automated signal recognition	3
Abundance‐related systematic bias in the quantification of phenology using site presence‐based survey methods	3
Colony attendance and moult pattern of Cory's Shearwaters (Calonectris borealis) differing in breeding status and age	3
Horizontal prey distribution determines the foraging performance of short‐ and long‐billed waders in virtual resource landscapes	3
Shelters or ecological traps? Context‐dependent effects of nestboxes on breeding success in a colonial raptor	3
Age, sex and individual identity are associated with the escape behaviour of Common Blackbirds ( Turdus merula ) in a European city	3
Extra‐pair paternity is not repeatable between years in Pied Flycatchers (Ficedula hypoleuca): a role for social context	3
Environmental correlates of spatio‐temporal patterns of colour variation in a bird of prey: The common buzzard ( Buteo buteo )	3
Genetic structure of the Japanese Robin (Larvivora akahige) endemic to East Asian islands	3
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Cowbirds use conspecific social information to detect host nests in the wild	3
Lincoln's sparrow (Melospiza lincolnii) increases singing rate in areas with chronic industrial noise	3
Genetic diversity and the implications of captive rearing for a small population of Black‐tailed Godwits	3
A half century of monitoring reveals contrasting survival responses of Icelandic seabirds to climate and fisheries pressures	3
Relationships between chick vocalizations and parental absence in Kentish Plovers	3
A synthesis of Eurasian Curlew (Numenius arquata arquata) demography and population viability to inform its management	3
Parental care assists fledglings in achieving adult‐like plumage and foraging behaviours in the Golden‐winged Warbler	3
Moult terminology: Let's make it simpler!	3
Asian Koels do not lay eggs matching the host eggs' phenotype	3
Differences in plumage coloration between ventral and dorsal regions on Atlantic Forest birds	3
	3
Author Index	3
Climate, habitat availability and human activity shape the wintering distribution of an increasing migratory piscivorous raptor within the Mediterranean basin	3
Mixed population trends inside a California protected area: Evidence from long‐term community science monitoring	3
When slow explorers are fast: Personality‐related differences in timing of migration in Red Knots (Calidris canutus)	3
Nest‐site selection and reproductive success of a critically endangered parrot, the Great Green Macaw (Ara ambiguus), in an anthropogenic landscape	2
Issue Information	2
The number of Great Tit mobbers influences the mobbing response of heterospecific birds	2
Unexpected spatial aggregation between two species of hummingbirds and their inconsistent spatial interactions with native and exotic plants in an urban ecological reserve	2
Evidence of two types of coordinated vocalizations used in different territorial defence contexts by an Asian cooperative breeder	2
Modelling the national breeding distribution and population size of an elusive forest bird, the Eurasian Woodcock ( Scolopax rusticola )	2
Plenty of rooftops with few neighbours occupied by young breeding Yellow‐legged Gulls (Larus michahellis): Does this occur at the expense of their health condition?	2
Issue Information	2
Are morphometric traits cryptic indicators of sexual size dimorphism in ‘monomorphic’ species? Evidence from the King Vulture ( Sarcoramphus papa )	2
Camelthorn and blackthorn trees provide important resources for Southern Pied Babblers (Turdoides bicolor) in the Kalahari	2
Sex‐biased dispersal in the Arabian babbler ( Argya squamiceps )	2
A feathered past: Colonial influences on bird naming practices, and a new common name for Ardenna carneipes (Gould 1844)	2
Conspecific density and habitat quality drive the defence and vocal behaviour of a territorial passerine	2
Human activities at night negatively impact Little Penguin (Eudyptula minor) numbers and behaviours	2
James John Maitland Flegg (1937–2024)	2
Challenges for incorporating long‐term baselines into biodiversity restoration: A case study of the Dalmatian Pelican (Pelecanus crispus) in Britain	2
Fight song: variation in singing behaviour and song structure during natural agonistic interactions in a tropical songbird, Adelaide's Warbler ( Setophaga adelaidae	2
Book Review	2
Adoption of non‐related goslings and intergenerational family cohesion among Greenland White‐fronted Geese (Anser albifrons flavirostris)	2
High survival promotes persistence in a reintroduced population of Common Crane (Grus grus)	2
High site and mate fidelity in a monogamous Arctic seabird	2
The difficult challenge of accurately recording iris colour in birds revealed through the lens of specimens of Australia's Spinifex Pigeon (Geophaps plumifera)	2
Urban birds' detectability is affected by inter‐ and intraspecific variation in shyness	2
Arnthor Gardarsson 1938–2022	2
The relationship of moult timing, duration and sequence to the aerial lifestyle of the Little Swift (Apus affinis)	2
Book Review	2
Past research and future directions in understanding how birds use their sense of smell	2
Correction to “Monitoring wader breeding productivity”	2
Issue Information	2
Fine‐scale patterns of genetic structure in three species of forest birds reveal dynamic Pleistocene history within an Amazonian interfluve	2
Skylark conservation in alpine habitats should focus on areas where conspecifics are already present	2
Book Reviews	2
	2
British Ornithologists' Union Godman‐Salvin Prize	2
Assessing the reproductive consequences of mate retention and pair bond duration in Thorn‐tailed Rayadito (Aphrastura spinicauda), a short‐lived, socially monogamous neotropical bird	2
Exposure to traffic noise weakens territory defence in the Southern Emu‐wren ( Stipiturus malachurus )	2
Australian Magpies discriminate between the territorial calls of intra‐ and extra‐group conspecifics	2
	2
Towards large‐scale abundance assessments through automated birdsong detection and distance estimation	2
Global extinction of Slender‐billed Curlew ( Numenius tenuirostris )	2
Issue Information	2
Wing patch size predicts assortative mating but not reproductive outcomes in the Daurian Redstart ( Phoenicurus auroreus )	2
The British List: A Checklist of Birds of Britain (10th edition)	2
Semi‐automated detection of tagged animals from camera trap images using artificial intelligence	2
Book Reviews	2
The lack of a role of body asymmetry in shaping tick load in European Robins ( Erithacus rubecula ) during autumn migration	2
BOU Page	1
Behavioural and fitness effects of experimental immune activation during incubation in a wild passerine	1
BOU Page	1
Using photographic records to quantify accuracy of bird identifications in citizen science data	1
Life‐stage and sex influence Philornis ectoparasitism in a Neotropical woodpecker Melanerpes striatus with	1
Revisiting the systematic position of the enigmatic Nicobar Bulbul (Ixos nicobariensis)	1
King Penguins adjust foraging effort rather than diet when faced with poor foraging conditions	1
New Zealand endemic open‐habitat specialist, the Black‐fronted Tern (Chlidonias albostriatus), experienced population expansion during Pleistocene glaciation and recent decline	1
	1
Systematic revision of the ‘diminutive’ Kentish Plover (Charadriidae: Charadrius) with the resurrection of Charadrius seebohmi based on phenotypic and genetic analyses	1
Yellow Cardinal (Gubernatrix cristata) males respond more strongly to local than to foreign dialects	1
Differential impact of anthropogenic noise during the acoustic development of begging calls in Blue Tits (Cyanistes caeruleus)	1
Using age‐ratios to investigate the status of two Siberian Phylloscopus species in Europe	1
	1
Population genetic structure associated with a landscape barrier in the Western Grasswren (Amytornis textilis textilis)	1
Fast cultural evolution of Crossbill (Loxia spp.) calls in the Palaearctic	1
Acoustic recording complements camera traps for monitoring sensitive penguin populations	1
The phenology and clutch size of UK Blue Tits does not differ with woodland composition	1
A novel deep learning‐based bioacoustic approach for identification of look‐alike white‐eye (Zosterops) species traded in wildlife markets	1
Genomic insights into the evolutionary and demographic histories of the extinct Hoopoe Starling (Fregilupus varius)	1