OOIR: Observatory of International Research

Papers

(The TQCC of Journal of Ornithology is 3. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-01-01 to 2026-01-01.)

Article	Citations
Are red-crested cardinals Paroaria coronata (Aves: Thraupidae) truly monomorphic?: evidence discloses sexual dichromatism and size differences since the nestling stage	62
Rapid flight feathers moult and fat stores in the Common Snipe Gallinago gallinago in the early stage of autumn migration	24
Copying of diving behavior in the Eurasian Coot Fulica atra	22
Kea, bird of versatility. Kea parrots (Nestor notabilis) show high behavioural flexibility in solving a demonstrated sequence task	13
Black Woodpeckers recolonize south-eastern border of their European range	13
Deconstructing avian flight: forelimb length correlates with coracoid dimensions in birds	13
Extra-pair paternity and sperm length variation in a far northern Great Tit (Parus major) population	13
Crossing the Sahara by small jumps: the complete migration of the Western Orphean Warbler Curruca hortensis	12
Breeding behaviour of Central European Red Kites: parental sex-dependent differences	12
Habitat factors influencing the breeding birds on animal farms: can modern agricultural infrastructure be good for birds?	11
Effects of an extreme weather event over reproduction and survival of Great Tits (Parus major) in eastern Spain	11
Daily movements of the Common Crane (Grus grus) during the premigration period	10
Patterns and drivers of landscape and local habitat use by UK Hawfinches (Coccothraustes coccothraustes) during the breeding season and late winter	10
Vocal variation in female Common Cuckoos (Cuculus canorus): geographic, ecological and morphological perspectives	10
Song structure of male Northern House Wrens and patterns of song production and delivery across the nesting cycle	10
Avalanches create unique habitats for birds in the European Alps	10
Ferruginous springs as colouring sites for Bearded Vulture (Gypaetus barbatus): characterisation, availability and applications for species conservation in the French Pyrenees	9
Hitting all the notes: Connecticut warblers sing an extended song type	9
Vocal interactions of breeding partners predict duration of incubation bout in an Artic seabird	9
Influence of ocean primary production on the activity pattern of wintering Common Terns	9
Migration routes, high-use areas, and network connectivity across the annual cycle of an arctic seabird	9
Determining sex ratios and mitochondrial haplotypes of Hawai‘i’s endemic and introduced ducks	8
Differences in stopover duration and body mass change among Emberiza buntings during autumn migration in the Russian Far East	8
Rüppell’s Vulture (Gyps rueppelli): a new vulture species for Europe?	8
The role of avian frugivores in the germination and dispersal of fleshy-fruited Ficus species in KwaZulu-Natal, South Africa	8

Space use during the breeding season of three different forest-dwelling owl species in an area of sympatry: a case study of male hunting home-range sizes and overlaps	8
Colony attendance behavior in response to weather and moonlight conditions in Japanese Murrelets (Synthliboramphus wumizusume) depending on breeding status	8
As the Raven flies: nest control with drones	8
Changes in over-winter prey availability, rather than winter climate, are associated with a long-term decline in a northern Tawny Owl population	8
A review of co-occurrence and hybridization as neglected factors in studies of Syrian Woodpecker (Dendrocopos syriacus) and Great Spotted Woodpecker (Dendrocopos major)	7
All around the egg: consistency of spottiness and colouration across an avian eggshell	7
Sex, age, mean annual temperature and year predict the body condition in Chiroxiphia caudata (Passeriformes: Pipridae)	7
Thermo-modernization influences nest density of Common Swifts (Apus apus): determinants of nest site choices in Poznań, Poland	7
The speed and magnitude of upward movements during the warm season depend on the reproductive success of a mountain galliform	7
Seasonal variation in home-range size of the White-backed Woodpecker	7
Sex identification based on biometrics in four long-distance migratory tern species mist-netted along the East Atlantic Flyway	7
First observation of a brood patch on a male sunbird (Chalcomitra amethystina)	7
Frequent duets, rare choruses, and extremely rare solos: year-round singing behavior in Chubb’s Cisticola	7
Predicting suitable winter habitats of Marmora’s Warbler (Curruca sarda) in North Africa using species distribution models	7
Body size constrains the annual apparent survival of lekking Great Snipe Gallinago media males of eastern, lowland population	6
Nest predation decreases with increasing nest height in forest songbirds: a comparative study	6
The role of winter cereals as cold-weather refuge for Taiga Bean Geese Anser fabalis fabalis wintering in Denmark	6
Reed die-back and conservation of small reed birds at Lake Neusiedl, Austria	6
No evidence for assortative mating in the Atlantic Puffin	6
Two central rectrices: a temporal fingerprint for individual recognition of barred woodpeckers	6
Vulture perceptions in a socio-ecological system: a case study of three protected areas in KwaZulu-Natal, South Africa	6
First year-round movement tracking of the Mediterranean Gull (Ichthyaetus melanocephalus) in Europe: insights and conservation recommendations for declining population	6
Visual fields are repeatable at the population and individual level	6
Delayed plumage signals social status in a mutually ornamented bird	6
Nest-site selection of the Iberian Green Woodpecker (Picus sharpei) in three biogeographical regions	6
Variation in corticosterone levels in Andean Condor (Vultur gryphus) feathers regarding age classes and molting periods	5
Differences in mortality patterns of White-tailed Eagle and Osprey in the eastern region of the Baltic Sea	5
Genome-wide DNA reveals decades-long genetic stability and intra-familial migratory site fidelity in an Asian population of Common Redshanks	5
Correction: Predation risk and landscape properties shape reproductive output of an endangered sea duck from two subpopulations with contrasting predation risk	5
The bacterial assemblage in the plumage of the Violet-crowned Hummingbird (Ramosomyia violiceps) varies with contrasting environments in Central-Western Mexico	5
Timing of Steller’s Eider remigial molt has delayed over 26-year span	5
Young, wild, and free—Subadult White-naped Crane (Antigone vipio) exhibit wider home range movements than breeding adults during the summering period	5
No experimental evidence of an adaptive antioxidative response induced by trace metals exposure in feral pigeons	5
En route activity of Chilean Elaenia, a long‐distance migratory bird in South America	5
Breeding ecology of a high-altitude shorebird in the Qinghai–Tibetan Plateau	5
Abundance, breeding records, and nest site characteristics of the critically endangered Hooded Vulture (Necrosyrtes monachus) in and around Chelekleka wetland, Ethiopia	5
Sea-crossing behaviour of two migratory eagles in relation to weather conditions	5
Margins matter: the importance of field margins as avian brood-rearing habitat in an intensive agricultural landscape	5
Irruptions of Bohemian Waxwings in relation to population density and food availability	5
Hematophagous ectoparasites affect nestling size and physiology, but not apparent survival	5
Comparing the effects of marking techniques on the survival of Piping Plover chicks	5
Cues to individuality in Greylag Goose faces: algorithmic discrimination and behavioral field tests	4
Migration routes and timing of European Nightjars (Caprimulgus europaeus) breeding in eastern Mongolia	4
The Yellow-breasted Barbet (Trachyphonus margaritatus) introduces vocal duets and choruses with a specific multimodal signal, during territorial advertisement	4
American Robin (Turdus migratorius) feeding young at night in an area of artificial light	4
Nest size parameters of Great Tits and Blue Tits: a long-term study	4
Long-term trends of local bird populations based on monitoring schemes: are they suitable for justifying management measures?	4
Bird breeding season linked to sunshine hours in a marginally seasonal equatorial climate	4
Inequality among offspring, correlates of recruitment and lifetime reproductive success in a long-lived raptor	4
Female and male body condition in the Whiskered Tern Chlidonias hybrida, a species with female offspring desertion: a test of the differential parental capacity hypothesis	4

Foraging areas and trip duration vary with the main prey captured, in a day-foraging/night-provisioning seabird	4
Male aggressiveness during the female fertile phase in relation to extra-pair paternity, plumage ornaments and female traits	4
The European Turtle Dove in the ecotone between woodland and farmland: multi-scale habitat associations and implications for the design of management interventions	4
Microplastics and terrestrial birds: a review on plastic ingestion in ecological linchpins	4
Seasonal dynamics of female bill colouration: an observation in captive House Sparrows (Passer domesticus)	4
The effect of daylight exposure on the immune response and body condition of Great Tit nestlings	4
Quality over size: acorn preference in Eurasian Jays (Garrulus glandarius)	4
African birds as army ant followers	4
Melanin-based plumage coloration and melanin content in organs in the barn owl	4
Climate change and the future of the endemic Ethiopian Siskin: a looming extinction crisis	4
Sex- and age-dependent breeding plumage acquisition in monomorphic species, the Black-headed Gull Chroicocephalus ridibundus	4
Altitudinal variation in oxidative status between breeding and non-breeding seasons in a Neotropical bird	4
Adult sex ratio in south temperate house wrens is explained by sexual differences in adult survival	4
The use of skylark plots by the European Skylark (Alauda arvensis) in Germany	4
The effects of temporally distinct light pollution from ships on nocturnal colony attendance in a threatened seabird	4
Heavy metal residues in eggshells of Common Cranes (Grus grus) nesting in an agricultural region in north-eastern Germany	4
Assignment of wintering Barnacle Geese (Branta leucopsis) to breeding populations using genome-wide single-nucleotide polymorphisms	4
Stable isotopes reveal synchronous primary flight feather moult pattern of Atlantic Puffins (Fratercula arctica)	4
Effect of climate change and deforestation on populations of Penelope pileata (Galliformes-Cracidae)	4
Dispersal and philopatry in Central European Red Kites Milvus milvus	4
Incubation behaviour of the Common Ringed Plover Charadrius hiaticula at different latitudes	4
Species limits and biogeography of the White-browed Tapaculo (Scytalopus superciliaris) complex and the Puna Tapaculo (S. simonsi)	4
Topography and wind moulding directions of autumn migration between Europe and the West African savannas	4
First record of a bird footprint in Brazil (Oligocene of the Taubaté Basin) and its paleoenvironmental implications	4
Is the settlement of a winter territory in the European Robin Erithacus rubecula triggered by the arrival of conspecific migrants?	4
A new foundation for the study of bird behaviour: Konrad Lorenz’s ‘Kumpan’ paper of 1935	3
Resolving disputed subspecies distribution limits, and revealing intraspecific intergradation, in the Common Redstart Phoenicurus phoenicurus using citizen science and museum data	3
Covariation between protandry and sexual size dimorphism is age specific in songbirds	3
Summer diet preferences of a declining steppe bird as revealed by DNA metabarcoding	3
Effects of winter weather conditions on abundance fluctuations in a nest box breeding population of the Common Merganser Mergus merganser in the southern coast of Finland	3
Assessing honeydew consumption and bird–bird interactions in bird communities in Southern Brazil	3
Stomach contents and stable isotope analysis reveal Antarctic prey in short-tailed shearwaters sampled at sea	3
The breeding ecology of the Agulhas Long-billed Lark: an endemic bird dependent on the remnant Renosterveld of the Western Cape Province, South Africa	3
Lowering the cost of citizen science: can we reduce the number of sampling visits in a constant ringing effort-based monitoring program?	3
Identification and quantification of carotenoids in supra-orbital combs of male black grouse (Lyrurus tetrix)	3
Nest survival of Crested Lark (Galerida cristata) in intensively used habitats in Central Poland	3
Heterophil-to-lymphocyte ratio varies with habitat fragmentation and canopy cover in a tropical understory insectivore	3
Citizen-science data resolves disputed subspecies limits in the lesser spotted woodpecker Dryobates minor across the Balkans and Minor Asia	3
Cross-continental differences in Black-tailed Godwit breeding densities are best explained by arthropod abundance in the chick-hatching period	3
Seasonal variation in migration routes of Common Whitethroat Curruca communis	3
Long-term monitoring of dwarf eggs in clutches of Yellow-legged Gulls (Larus michahellis) breeding in a western Mediterranean colony	3
The true identity of the strigiform species Ninox dubiosa Weick, 2006, with comments on a skull feature shared by the Ieraglaucinae and Surniinae	3
The critically endangered Araripe Manakin (Antilophia bokermanni) is uninfected by, but probably susceptible to, haemosporidians in northeastern Brazil	3
First genetically confirmed record of a wild Marsh Tit × Willow Tit hybrid (Poecile palustris × P. montanus)	3
Foraging sites of the Eurasian Three-toed Woodpecker (Picoides tridactylus) in relation to sex in primeval forest stands of the Białowieża National Park	3
Timing, reproduction and biometrics of a long-distance passerine migrant in a core and a peripheral population	3
First documentation of vocal mimicry in female northern mockingbirds	3
Connectivity of wetland areas along the East Atlantic Flyway used as moulting and stopover sites by Pied Avocets (Recurvirostra avosetta) during autumn migration	3
Rainforest birds avoid biotic signal masking only in cases of high acoustic saturation	3
Spring-accelerated loop migration in the Woodchat Shrike Lanius senator	3
Fluctuations in population size and migration of two species of crossbills in relation to seed crop size of spruce and pine: asymmetric importance of alternative food resources	3
Differences in foraging behaviour of a migrating shorebird at stopover sites on regulated and unregulated sections of a large European lowland river	3
Another case of island gigantism: the extinct Hodgens’ Waterhen (Tribonyx hodgenorum) is a member of Porzana (Aves: Rallidae)	3
The uropygial gland of the Great Cormorant (Phalacrocorax carbo): II. Biochemical analysis of the uropygial secretion	3
Aggressive behavior as a predictor of home range size: findings from both range-restricted and widespread Darwin’s finch species	3
Birds and the ‘Post Tower’ in Bonn: a case study of light pollution	3
Interspecific differences in eggshell thickness and the elemental composition of pigment spot and plain shell regions in altricial and precocial birds	3
Two new neoavian taxa with contrasting palaeobiogeographical implications from the early Miocene St Bathans Fauna, New Zealand	3
Drivers of nest site selection and breeding success in an Alpine ground-nesting songbird	3
Hatching asynchrony as a parental reproductive strategy in birds: a review of causes and consequences	3
New records of Pleistocene birds of prey from Ecuador	3
Age-related time budget and behaviour of Northern Lapwing (Vanellus vanellus) chicks	3