Ibis

Article	Citations
BOU Page	104
Competitive events during nest‐building influence offspring growth and behaviour, but not testosterone deposition in the egg yolk in Western Bluebirds (Sialia mexicana)	77
British Ornithologists’ Union Records Committee (BOURC): 57th Report (January 2025)	50
Large‐scale depth‐related seasonal distribution patterns of a benthic‐feeding sea duck in two contrasting marine systems	38
Using citizen science image analysis to measure seabird phenology	30
A new species of nightjar (Caprimulgus) from Timor and Wetar, Lesser Sunda Islands, Wallacea	28
Similar survival of birds between wet and seasonally dry Neotropical environments	27
Variation in mesopredator abundance and nest predation rate of the endangered Strange‐tailed Tyrant (Alectrurus risora)	26
The adaptive function of construction of multiple non‐breeding nests in birds	24
Monitoring wader breeding productivity	22
Optimization of passive acoustic bird surveys: a global assessment of BirdNET settings	21
An automated workflow that combines sound‐based bird identification and localization	20
Book Review	19
Simultaneous passive acoustic monitoring uncovers evidence of potentially overlooked temporal variation in an Amazonian bird community	19
Re‐assessing the phylogenetic status and evolutionary relationship of Forest Owlet ( Athene blewitti (Hume 1873)) using genomic data	18
BOU Page	18
Acknowledgement of Reviewers	17
Investigating connectivity and seasonal differences in wind assistance in the migration of Common Sandpipers	15
Book Reviews	15
DNA metabarcoding complements but does not replace direct observations of penguin predation by corvids	15
Alternative future land use options in the British uplands	14
Nest reliefs in a cryptically incubating shorebird are quick, but vocal	14
Corrigendum to: Knowledge gaps and biases in the Pantanal indicate future directions for ornithological research in large wetlands	14
Using acoustic indices to detect interspecific bird interactions and behaviour	13
Source amplitude increases with body‐mass across avian genera	12

Factors determining nest‐site selection of surface‐nesting seabirds: a case study on the world's largest pelagic bird, the Wandering Albatross (Diomedea exulans)	12
Using satellite tracking to assess the use of protected areas and alternative roosts by Whooper and Bewick's Swans	12
Song complexity is associated with habitat quality in an upland passerine	12
Issue Information	11
No detrimental effects of wing‐harnessed GPS devices on the breeding performance of Yellow‐legged Gulls (Larus michahellis): A multi‐colony evaluation	11
The potential for climate change to intensify nest‐site competition between two sympatric owl species	11
Nest attachment, rather than nest type, correlates with passerine bird brain size	11
The structural function of the bubbling call of the female common cuckoo (Cuculus canorus)	11
Demography of Common Swifts (Apus apus) breeding in the UK associated with local weather but not aphid biomass	11
Spatio‐temporal differences in the diet and trophic ecology of Kelp Gulls (Larus dominicanus) in South Africa	11
Absence of negative effect of GPS‐tags on survival and breeding success in a long‐lived territorial raptor	10
Structured phylogeography and restricted gene flow among populations of Fairy Tern (Sternula nereis) across Australasia: implications for the endangered New Zealand population	10
British Ornithologists Union: Janet Kear Union Medal	10
Erratum	10
Estimating Little Penguin population sizes using automated acoustic monitoring and citizen science	10
Factors determining persistent asymmetry and egg shape in birds: A hypothesis	9
Unexpected diversity of alternative reproductive tactics revealed in Water Rails ( Rallus aquaticus )	9
	9
The ongoing narrative of Ivory‐billed Woodpecker rediscovery and support for declaring the species extinct	9
Species characteristics predict the effectiveness of avian survey methods in an Afromontane sky‐island	9
Comparative support for the social complexity hypothesis in the calls of two closely related species – Tufted Titmice Baeolophus bicolor and Black‐creste	9
Essential steps for establishing a large‐scale passive acoustic monitoring for an elusive forest bird species: the Eurasian Woodcock ( Scolopax rusticola	9
Moult chronology and strategies of sympatric Great (Ardenna gravis) and Sooty (A. grisea) Shearwaters based on stable isotope analysis	9
Spatial patterns of local dialects of the declining Corn Bunting ( Emberiza calandra ) in three regions with different population densities and small‐sca	9
The importance of wetland habitat area for waterbird species‐richness	8
Nest survival of threatened Eurasian Curlew (Numenius arquata) breeding at low densities across a human‐modified landscape	8
Variability of a consistent trait: The size of the white wing patch in European Stonechats (Saxicola rubicola rubicola)	8
Male Superb Lyrebirds (Menura novaehollandiae) perform an ornate multimodal display immediately following copulation	8
Connection between ecological niche changes and population trends in the Eurasian Skylark (Alauda arvensis) breeding in lowland and mountain areas of Southern Europe	8
Welcome aboard: are birds migrating across the Mediterranean Sea using ships as stopovers during adverse weather conditions?	8
Thermal effects of plumage coloration	8
Predicting population trends of birds worldwide with big data and machine learning	8
Artificial light alters spatial and temporal habitat use by a crepuscular aerial insectivore	8
Split moult: a response to time constraints during the main moult period	8
	7
Unlocking avian museum collections to enable and advance environmental change research	7
Distinct bird communities in forests and fruit farms of Caatinga landscapes	7
The effect of conservation interventions on the abundance of breeding waders within nature reserves in the United Kingdom	7
Acknowledgement of Reviewers	7
	7
The influence of sample size on two approaches to estimate Black Grouse Lyrurus tetrix population size using non‐invasive sampling methods	7
Causes of vagrancy of North Asian passerines in western Europe	7
Temporal constraints influence reproductive characteristics that are related to the pace‐of‐life continuum in geese	7
	7
Acknowledgement of Reviewers	7
Foraging niche partitioning within a recently established guild of falcons	7
Variation in nest‐site occupancy and breeding outcome in a threatened Subantarctic raptor	7
British Ornithologists' Union Records Committee (BOURC): 58th Report (January 2026)	7
Bird deterrent measures at a landfill decreased the productivity of a dependent population of White Stork ( Ciconia ciconia )	7
Dynamic changes in the avian gut microbiome in response to diverse lifestyles	6

	6
Soft song provokes stronger aggressive responses than broadcast song in the Plain Laughingthrush (Pterorhinus davidi)	6
Stable isotope data indicate origins of mislabelled historical bird specimens	6
Morphological differences between wild and game‐farm Mallards (Anas platyrhynchos) in North America	6
Field‐based evidence of impaired sperm quality associated with conventional farming in two passerine birds	6
British Ornithologists’ Union Records Committee (BOURC): 56th Report (January 2024)	6
Riparian forests and open landscapes in the West African Sahel are key wintering habitats for the threatened European Turtle‐dove (Streptopelia turtur)	6
Citizen science data confirm that expanding non‐breeding distributions of goose and swan species correlate with their increasing abundance	6
Inadequate reproductive success is a potential cause of Spotted Flycatcher (Muscicapa striata) population decline in England	6
Space–time home‐range estimates and resource selection for the Critically Endangered Philippine Eagle on Mindanao	6
BOU Page	6
British Ornithologists' Union – Early Professional Award 2025	6
Estimating the mass of the Great Auk (Pinguinus impennis) and its egg	6
Irruptions of crossbills Loxia spp. in northern Europe – patterns and correlations with seed production by key and non‐key conifers	6
Challenges in population monitoring: Bar‐tailed Godwits (Limosa lapponica) on the East Atlantic Flyway defy assumed population structure	5
Acoustic niche partitioning among seven cuckoo species in a forest in eastern China	5
	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
Book Review	5
Variable social organization and breeding system of a social parrot revealed by genetic analysis	5
Divergent foraging habitat preferences between summer‐breeding and winter‐breedingProcellariapetrels	5
Book Review	5
Issue Information	5
Erratum	5
Conservation and management implications of the effects of wildfire on a threatened Eastern Iberian Reed Bunting (Emberiza schoeniclus witherbyi) population	5
The Red‐billed Leiothrix (Leiothrix lutea): a new invasive species for Britain?	5
Effects of sex and sampling site on the relative proportion of pesticides in uropygial gland secretions of European Blackbirds (Turdus merula)	5
Issue Information	5
Functions of avian elongated tails, with suggestions for future studies	5
Natal philopatry, dispersal and age of first breeding in relation to size and sex of Arctic Terns ( Sterna paradisaea )	5
Disturbance‐dependent Yellow‐legged Gull (Larus michahellis) predation on Larid chicks decreases with chick age	5
Contents	5
Multi‐scale habitat overlap in two broad‐ranged sympatric Neotropical forest eagles reveals shared environmental space and habitat use	4
The need for a flyway approach in defining the onset of prenuptial migration of huntable bird species across Europe	4
Seasonal, environmental and individual determinants of double‐brooding in the White‐throated Dipper ( Cinclus cinclus )	4
Abundance determines core–periphery roles of birds in a Neotropical seed dispersal network	4
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)	4
Assessing long‐term dynamics of non‐breeding Brown Pelican (Pelecanus occidentalis) populations using Christmas Bird Count data	4
Book Reviews	4
British Ornithologists' Union – Godman Salvin Prize	4
The Eurasian Treecreeper (Certhia familiaris) has an effective camouflage against mammalian but not avian vision in boreal forests	4
Moult phenology advances under hot or dry conditions for two passerines across 16 years in a Mediterranean climate	4
Experience increases defensive responses of White‐fronted Woodpeckers towards the invasive European Starling	4
Evaluation of ongoing Crested Ibis (Nipponia nippon) reintroduction using an integrated population model and Bayesian population viability analysis	4
Ski‐pistes can compensate for the climate change‐driven loss of bird communities of avalanche tracks in the Alps	4
Population genetics and phylogeography of North American Merlins (Falco columbarius) in thepost‐DDT era	4
Contents	4
Temperature sensitivity of breeding phenology and reproductive output of the Common Redstart ( Phoenicurus phoenicurus )	4
Wintering area and experience effects on spring migration strategies, timing and breeding success in Icelandic‐nesting Common Scoters (Melanitta nigra)	4
Using empirical data analysis and expert opinion to identify farmland‐associated bird species from their habitat associations	4
Nest clustering correlates with breeding phenology rather than female relatedness in Red‐breasted Mergansers (Mergus serrator)	4
Perceived risks and rewards of foraging sites strongly affect density and condition of non‐breeding Hudsonian Godwits	4
Community science data suggest the most common raptors (Accipitridae) in urban centres are smaller, habitat‐generalist species	4
A comparison of foraging‐range sizes, flight distances and foraging habitat preferences in urban and rural House Sparrow (Passer domesticus) populations	4
Identifying the winter grounds of the recently described Barbary Reed Warbler (Acrocephalus baeticatus ambiguus)	4
Nesting and post‐fledging predation risk influence diel patterns of songbird fledging	4
Michael (Mike) Guy Wilson, MA, MBOU (1942–2022)	4
A distinct new species ofZosteropswhite‐eye from the Sulawesi region, Indonesia	4
Life in the fast and slow lanes: contrasting timing of annual cycle events in high‐ and mid‐latitude breeding Whooper Swans (Cygnus cygnus)	4
Peter J. Jones 1945–2024	4
Inferred costs and functional consequences of stone morphometry in the stone‐carrying displays of Black Wheatear (Oenanthe leucura)	4
Issue Information	4
A synthesis of Eurasian Curlew (Numenius arquata arquata) demography and population viability to inform its management	3
Vocal responses of Hermit Thrush (Catharus guttatus) males to territorial playback of conspecific song	3
Fruit abundance may fine‐tune timing of reproduction of the Chilean Elaenia (Elaenia chilensis), a long‐distance migratory bird in South America	3
Toward scoping reviews of individual bird species	3
Asian Koels do not lay eggs matching the host eggs' phenotype	3
Corrigendum	3
A diet perspective on the impact of the COVID ‐19 lockdown on urban bird assemblages	3
Reducing bias in shorebird nest survival rates across a large Arctic landscape	3
British Ornithologists’ Union – Early Professional Award 2024	3
An a priori assessment of the impact of harvesting from five wild populations for conservation translocations	3
Issue Information	3
Global range dynamics of the Bearded Vulture (Gypaetus barbatus) from the Last Glacial Maximum to climate change scenarios	3
Use and definitions of the terms arena, lek and court in describing avian courtship sites	3
Genetic structure of the Japanese Robin (Larvivora akahige) endemic to East Asian islands	3
Ringing, tracking and counting data reveal five wintering patterns in European Common Shelducks	3
Moult is associated with higher diversity of food items in the diet of Common Bulbuls (Pycnonotus barbatus) in Cameroon	3
Non‐breeding home range and habitat use by European Pied Flycatcher ( Ficedula hypoleuca ) in northwest Liberia: apparent resilience to forest degradatio	3

Weak niche partitioning between closely related sympatric Greater (Clanga clanga) and Lesser Spotted Eagles (C. pomarina)	3
Moult terminology: Let's make it simpler!	3
Vocal individuality measures reveal spatial and temporal variation in roding behaviour in Woodcock (Scolopax rusticola)	3
Age, sex and individual identity are associated with the escape behaviour of Common Blackbirds ( Turdus merula ) in a European city	3
	3
Vocal traits of shorebird chicks are related to body mass and sex	3
Differences in plumage coloration between ventral and dorsal regions on Atlantic Forest birds	3
BOU Page	3
A Neolithic rock engraving apparently showing a Great Auk being captured	3
Multimodal signalling in manakins: lack of correlated evolution between acoustic, visual and behavioural traits	3
Issue Information	3
Urban and coastal breeding lesser black‐backed gulls (Larus fuscus) segregate by foraging habitat	3
GPS tracking of the two subspecies of the eastern buzzard (Buteo japonicus) reveals a migratory divide along the Sea of Japan	3
Extra‐pair paternity is not repeatable between years in Pied Flycatchers (Ficedula hypoleuca): a role for social context	3
Mixed population trends inside a California protected area: Evidence from long‐term community science monitoring	3
Horizontal prey distribution determines the foraging performance of short‐ and long‐billed waders in virtual resource landscapes	3
Arnthor Gardarsson 1938–2022	2
Global extinction of Slender‐billed Curlew ( Numenius tenuirostris )	2
Conspecific density and habitat quality drive the defence and vocal behaviour of a territorial passerine	2
A feathered past: Colonial influences on bird naming practices, and a new common name for Ardenna carneipes (Gould 1844)	2
The British List: A Checklist of Birds of Britain (10th edition)	2
Sex‐biased dispersal in the Arabian babbler ( Argya squamiceps )	2
Past research and future directions in understanding how birds use their sense of smell	2
Book Reviews	2
Author Index	2
British Ornithologists' Union Godman‐Salvin Prize	2
Climate, habitat availability and human activity shape the wintering distribution of an increasing migratory piscivorous raptor within the Mediterranean basin	2
	2
Colony attendance and moult pattern of Cory's Shearwaters (Calonectris borealis) differing in breeding status and age	2
James John Maitland Flegg (1937–2024)	2
High trophic niche overlap in mixed‐species colonies using artificial nests	2
When slow explorers are fast: Personality‐related differences in timing of migration in Red Knots (Calidris canutus)	2
	2
Issue Information	2
Exposure to traffic noise weakens territory defence in the Southern Emu‐wren ( Stipiturus malachurus )	2
An allometric approach to seasonal changes in intake rates of migratory shorebirds in the Bijagós Archipelago, Guinea‐Bissau	2
Are morphometric traits cryptic indicators of sexual size dimorphism in ‘monomorphic’ species? Evidence from the King Vulture ( Sarcoramphus papa )	2
Adoption of non‐related goslings and intergenerational family cohesion among Greenland White‐fronted Geese (Anser albifrons flavirostris)	2
Challenges for incorporating long‐term baselines into biodiversity restoration: A case study of the Dalmatian Pelican (Pelecanus crispus) in Britain	2
Nest‐site selection and reproductive success of a critically endangered parrot, the Great Green Macaw (Ara ambiguus), in an anthropogenic landscape	2
Semi‐automated detection of tagged animals from camera trap images using artificial intelligence	2
Towards large‐scale abundance assessments through automated birdsong detection and distance estimation	2
Issue Information	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
Wing patch size predicts assortative mating but not reproductive outcomes in the Daurian Redstart ( Phoenicurus auroreus )	2
Habitat partitioning and spatial segregation at multiple scales promotes year‐round coexistence in a guild of forest songbirds	2
High survival promotes persistence in a reintroduced population of Common Crane (Grus grus)	2
Current and future effectiveness of protected areas for the conservation of endemic owls from the Atlantic Forest	2
Skylark conservation in alpine habitats should focus on areas where conspecifics are already present	2
Reduced range size and Important Bird and Biodiversity Area coverage for the Harpy Eagle (Harpia harpyja) predicted from multiple climate change scenarios	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
Diel and seasonal variation of Striped Cuckoo (Tapera naevia) vocalizations revealed using automated signal recognition	2
Issue Information	2
Urban birds' detectability is affected by inter‐ and intraspecific variation in shyness	2
	2
Issue Information	2
Fight song: variation in singing behaviour and song structure during natural agonistic interactions in a tropical songbird, Adelaide's Warbler ( Setophaga adelaidae	2
High site and mate fidelity in a monogamous Arctic seabird	2
Human activities at night negatively impact Little Penguin (Eudyptula minor) numbers and behaviours	2
Australian Magpies discriminate between the territorial calls of intra‐ and extra‐group conspecifics	2
Correction to “Monitoring wader breeding productivity”	2
The number of Great Tit mobbers influences the mobbing response of heterospecific birds	2
Book Review	2
Drivers of change in mountain and upland bird populations in Europe	2
Camelthorn and blackthorn trees provide important resources for Southern Pied Babblers (Turdoides bicolor) in the Kalahari	2
Lincoln's sparrow (Melospiza lincolnii) increases singing rate in areas with chronic industrial noise	2
Book Reviews	2
Abundance‐related systematic bias in the quantification of phenology using site presence‐based survey methods	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
Genetic diversity and the implications of captive rearing for a small population of Black‐tailed Godwits	2
Bird genetic databases need improved curation and error reporting to NCBI	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
British Ornithologists’ Union – Godman Salvin Prize	1
Short‐distance nocturnal migration in an island endemic bustard	1
A novel deep learning‐based bioacoustic approach for identification of look‐alike white‐eye (Zosterops) species traded in wildlife markets	1
Differential impact of anthropogenic noise during the acoustic development of begging calls in Blue Tits (Cyanistes caeruleus)	1
Fast cultural evolution of Crossbill (Loxia spp.) calls in the Palaearctic	1
Generating population estimates for migratory shorebird species in the world’s largest flyway	1
Systematic revision of the ‘diminutive’ Kentish Plover (Charadriidae: Charadrius) with the resurrection of Charadrius seebohmi based on phenotypic and genetic analyses	1
Chemical aposematism: the potential for non‐host odours in avian defence	1
Effects of overhead power‐lines on the density of ground‐nesting birds in open sub‐arctic habitats	1
Acoustic recording complements camera traps for monitoring sensitive penguin populations	1
Automated radio tracking provides evidence for social pair bonds in an obligate brood parasite	1
The phenology and clutch size of UK Blue Tits does not differ with woodland composition	1
Assessing the importance of individual‐ and colony‐level variation when using seabird foraging ranges as impact assessment and conservation tools	1
Icelandic Whimbrel first migration: Non‐stop until West Africa, yet later departure and slower travel than adults	1
Modelling migration dynamics of Common Cranes and Eurasian Spoonbills as hydrological flow	1
Characterizing Ancient Murrelet Synthliboramphus antiquus movement behaviour during breeding‐season foraging trips using hidden Markov models	1
Issue Information	1
Yellow Cardinal (Gubernatrix cristata) males respond more strongly to local than to foreign dialects	1
Island life accelerates geographic radiation in the white‐eyes (Zosteropidae)	1
Genomic insights into the evolutionary and demographic histories of the extinct Hoopoe Starling (Fregilupus varius)	1
Using age‐ratios to investigate the status of two Siberian Phylloscopus species in Europe	1
Cryptic hybridization between Common (Apus apus) and Pallid (A. pallidus) Swifts	1
Life‐stage and sex influence Philornis ectoparasitism in a Neotropical woodpecker Melanerpes striatus with	1