Citizen science reveals broad-scale variation of calling activity of the Mediterranean tree frog (Hyla meridionalis) in its westernmost range

Moonlight influence on quality of nestlings of scops owls depends on paternal coloration

Ecogeographical patterns in owl plumage colouration: Climate and vegetation cover predict global colour variation

Early-life environmental conditions influence parasitism at adulthood and life-history of a cuckoo host

The Role of Intra-Clutch Variation of Magpie Clutches in Foreign Egg Rejection Depends on the Egg Trait Considered

Geographical variation in pace-of-life in a long-distance migratory bird: implications for population management

Redness variation in the Eurasian scops owl Otus scops is due to pheomelanin but is not associated with variation in the melanocortin-1 receptor gene (MC1R).

Physiological stress and behavioural responses of European Rollers and Eurasian Scops Owls to human disturbance differ in farming habitats in the south of Spain.

Phaeomelanin matters: Redness associates with inter-individual differences in behaviour and feather corticosterone in male scops owls (Otus scops)

Past and future climate-driven shifts in the distribution of a warm-adapted bird species, the European Roller Coracias garrulus

Iris yellowness relates to age and individual quality in two owl species

Past and future climate-driven shifts in the distribution of a warm-adapted bird species, the European Roller Coracias garrulus

Avian egg and nestling detection in the wild: should we rely on visual models or behavioural experiments?

Melanism influences the use of social information in a polymorphic owl

Redness variation in the Eurasian scops owl Otus scops is due to pheomelanin but is not associated with variation in the melanocortin-1 receptor gene (MC1R).

Pruning promotes the formation of an insufficient number of cavities for hollow-dependent birds in Iberian Holm-oak dehesas

The reliability of achromatic displays is island-dependent in nocturnal Storm Petrels

Avian and rodent responses to the olfactory landscape in a Mediterranean cavity community

Apparent survival, growth rate and dispersal in a declining European Roller population

Adaptive responses of animals to climate change are most likely insufficient

Great spotted cuckoos disregard information on conspecific breeding success while parasitizing magpie hosts

Receivers matter: the meaning of alarm calls and competition for nest sites in a bird community

The evolution of iris colour in relation to nocturnality in owls

Determinants of color polymorphism in the Eurasian scops owl Otus scops

Important areas for the conservation of the European Roller Coracias garrulus during the non-breeding season in southern Africa

Inter-specific brood parasitism and the evolution of avian reproductive strategies

Can hosts tolerate avian brood parasites? An appraisal of mechanisms

Integrating mechanisms in the study of tolerance to brood parasites: A response to comments on Avilés

Colour polymorphism in owls is linked to light variability

Host nest site choice depends on risk of cuckoo parasitism in magpie hosts

Kestrels rely on two different types of social information from conspecifics when choosing breeding habitats

Papel de los estudios comportamentales en ecología

The value of long-term studies in behavioural ecology

Multi-functional crest display in hoopoes Upupa epops

Criteria for host selection in a brood parasite vary depending on parasitism rate

Exploratory behaviour modulates the relationship between colony familiarity and helping in a cooperative bird

Social information use by competitors: Resolving the enigma of species coexistence in animals?

Short- and long-term effects of tracking devices on the European Roller Coracias garrulus

Parentage Analyses Reveal Hidden Breeding Strategies of European Rollers Coracias garrulus

A pan-European, multipopulation assessment of migratory connectivity in a near-threatened migrant bird

Disentangling migratory routes and wintering grounds of Iberian near-threatened European rollers Coracias garrulus

Characterization of 28 microsatellite loci in the European roller Coracias garrulus (Coracidae, AVES)

Are female starlings able to recognize the scent of their offspring?

Ambient light in domed nests and discrimination of foreign egg colors

Characterization of 28 microsatellite loci in the European roller Coracias garrulus (Coracidae, AVES)

Ambient light in domed nests and discrimination of foreign egg colors

Are female starlings able to recognize the scent of their offspring?

Climatic effects and phenological mismatch in cuckoo-host interactions: A role for host phenotypic plasticity in laying date?

Cuckoo hosts shift from accepting to rejecting parasitic eggs across their lifetime

The multidimensionality of behavioural defences against brood parasites: Evidence for a behavioural syndrome in magpies?

Eavesdropping cuckoos: Further insights on great spotted cuckoo preference by magpie nests and egg colour

Eavesdropping cuckoos: further insights on great spotted cuckoo preference by magpie nests and egg colour

Sexual differences in colour and size in the Great Spotted Cuckoo Clamator glandarius

Evidence of long-term structured cuckoo parasitism on individual magpie hosts

Does avian conspicuous colouration increase or reduce predation risk?

Colour also matters for nocturnal birds: owlet bill coloration advertises quality and influences parental feeding behaviour in little owls

Armed Rollers: Does Nestling's Vomit Function as a Defence against Predators?

Supplemental food affects egg size but not hatching asynchrony in rollers

Sex recognition by odour and variation in the uropygial gland secretion in starlings

Rollers smell the fear of nestlings

Factors affecting natal and breeding magpie dispersal in a population parasitized by the great spotted cuckoo

Egg phenotype matching by cuckoos in relation to discrimination by hosts and climatic conditions

Covariation between bill colouration and fitness components in a nocturnal bird

Alarm calls modulate the spatial structure of a breeding owl community

Age-related sexual plumage dimorphism and badge framing in the European Robin Erithacus rubecula

Attractive blue egg coloration and cuckoo-host coevolution

The value of nestboxes in the conservation of Eurasian Rollers Coracias garrulus in southern Spain

The common cuckoo Cuculus canorus is not locally adapted to its reed warbler Acrocephalus scirpaceus host

Egg Discrimination in an Open Nesting Passerine Under Dim Light Conditions

Blue-green eggshell coloration reflects yolk antioxidant content in spotless starlings Sturnus unicolor

Sexual selection based on egg colour: physiological models and egg discrimination experiments in a cavity-nesting bird

Blue-green eggshell coloration reflects yolk antioxidant content in spotless starlings (Sturnus unicolor)

Sexual selection based on egg colour: Physiological models and egg discrimination experiments in a cavity-nesting bird

Parental favouritism strategies in the asynchronously hatching European Roller (Coracias garrulus)

Common cuckoos are not locally adapted to their reed warbler hosts

Informative content of melanin-based plumage colour in adult Eurasian kestrels

Experimental feeding affects the relationship between hematocrit and body weight in spotless starling (Sturnus unicolor) nestlings

Predation risk determines breeding territory choice in a Mediterranean cavity-nesting bird community

Developmental plasticity varied with sex and position in hatching hierarchy in nestlings of the asynchronous European roller, Coracias garrulus

Sibling competition and conspicuousness of nestling gapes in altricial birds. A comparative study

Beak colour reflects circulating carotenoid and vitamin A levels in spotless starlings (Sturnus unicolor)

Do spotless starlings place feathers at their nests by ultraviolet colour?

Visual cues and parental favouritism in a nocturnal bird

Developmental plasticity varied with sex and position in hatching hierarchy in nestlings of the asynchronous European roller

Nestling coloration is adjusted to parent visual performance in altricial birds irrespective of assumptions on vision system for Laniidae and owls, a reply to Renoult et al.

Avian colour perception predicts behavioural responses to experimental brood parasitism in chaffinches

Increased host tolerance of multiple cuckoo eggs leads to higher fledging success of brood parasites

Nestling coloration is adjusted to parent visual performance in altricial birds

Common cuckoos (Cuculus canorus) do not rely on indicators of parental abilities when searching for host nests: the importance of host defences

Male spotless starlings adjust feeding effort based on egg spots revealing ecto-parasite load

Dark nests and conspicuousness in color patterns of nestlings of altricial birds

Female and male plumage brightness correlate with nesting failure in azure-winged magpies

Dark nests and nestling conspicuousness in color patterns of altricial birds

Sexually selected egg coloration in spotless starlings

Winter male plumage coloration correlates with breeding status in a cooperative breeding species

Do great tits rely on inadvertent social information produced by blue tits? A habitat selection experiment

Experimental support for the use of egg uniformity in parasite egg discrimination by cuckoo hosts

Egg colour mimicry in the common cuckoo Cuculus canorus as revealed by modelling host retinal function

Informative content of multiple plumage coloured traits in female and male European Rollers

Spotless starlings rely on public information while visiting conspecific nests: an experiment

Within-brood size differences affect innate and acquired immunity in roller Coracias garrulus nestlings

Do avian brood parasites eavesdrop on heterospecific sexual signals revealing host quality? A review of the evidence

Environmental conditions influence egg colour of reed warblers Acrocephalus scirpaceus and their parasite, the common cuckoo Cuculus canorus

Egg rejection and brain size among potential hosts of the common cuckoo

How do vigilance and feeding by common cranes depend on age, habitat, and flock size?

Within-brood size differences affect innate and acquired immunity in roller nestlings

A comparative study of the function of heterospecific vocal mimicry in European passerines

Is the relation between colour and immune response mediated by nutritional condition in spotless starling nestlings?

Carraca (Coracias garrulus)

Responses of currently parasitized and unparasitized common redstart (Phoenicurus phoenicurus) populatons against artificial cuckoo parasitism.

Nest predation and the evolution of egg appearance in passerine birds in Europe and North America

Nest defense by Iberian azure-winged magpies (Cyanopica cyanus): do they recognize the threat of brood parasitism?

Rapid increase in cuckoo egg matching in a recently parasitized reed warbler population

Relationship between nest predation suffered by hosts and brown-headed cowbird parasitism: a comparative study

Dark nests and egg colour in birds: a possible functional role of ultraviolet reflectance in egg detectability

Ultraviolet reflectance of great spotted cuckoo eggs and egg discrimination by magpies

Should the redstart Phoenicurus phoenicurus accept or reject cuckoo Cuculus canorus eggs?

Proporción de sexos en polladas de cernícalo primilla Falco naumanni: Reproductores más viejos prefieren producir hembras

The hetero-specific habitat copying hypothesis: can competitors indicate habitat quality?

Brood parasitism by brown-headed cowbirds and the expression of sexual characters in their hosts

Should the redstart (Phoenicurus phoenicurus) accept or reject cuckoo eggs?

Blue and green egg color intensity is associated with parental effort and mating system in passerines: support for the sexual selection hypothesis.

Egg rejection by Iberian azure-winged magpies Cyanopica cyanus in the absence of brood parasitism

La Carraca Coracias garrulus

Common cranes Grus grus and habitat management in holm oak dehesas of Spain

How host egg mimicry is maintained in the cuckoo Cuculus canorus?

Farming practices and Roller Coracias garrulus conservation in south-west Spain

Egg rejection by Iberian azure-winged magpies in absence of brood parasitism

Rejection of parasitic eggs in relation to egg appearance in magpies

Dieta invernal del aguilucho pálido (Circus cyaneus) en una localidad extremeña

Biometría de los pollos de Carraca Coracias garrulus en la comarca de la Serena, Badajoz

Time budget and habitat use of the Common Crane Grus grus wintering in dehesas of southwest Spain

Meadow pipits (Anthus pratensis) egg appearance in cuckoo (Cuculus canorus) sympatric and allopatric populations

Evolution of host egg mimicry in a brood parasite, the great spotted cuckoo

Diet and prey type selection by rollers (Coracias garrulus) during the breeding season in southwestern Iberian Peninsula

Food selection of wintering common cranes (Grus Grus) in Holm Oak (Quercus ilex) dehesas of Southwest of Spain in a rainy season

Does temporal variability of winter common cranes in the dehesas depend on farming practices?

Breeding biology of the Little Egret Egretta garzetta in the Southwest of the Iberian Peninsula

Breeding biology of the Black-Crowned Nigh Heron Nycticorax Nycticorax in the Southwest of the Iberian Peninsula

Breeding rates of the Eurasian kestrel Falco tinnunculus in relation to the habitat around nests in the southwest of Spain

Breeding biology of the Cattle Egret Bubulcus ibis in the Southwest of the Iberian Peninsula

Communal roosting and diet of Black-shouldered Kite Elanus caeruleus wintering in the southwest of Spain

Nest-boxes used by Eurasian kestrels Falco tinnunculus are preferred by rollers Coracias garrulus.

Avian responses to nest-box installation in steppes of the southwest of the Iberian Peninsula (Extremadura)

Selección de presas aportadas a pollos de Carraca (Coracias garrulus) en una zona mediterránea

Importancia de las zonas húmedas extremeñas en la ruta de migración occidental de aves acuáticas

Differences in reproductive performance in two colonies of Egrets in two areas with different human influence

Incubation period and weather conditions in a Roller Coracias garrulus population from south-west Iberian Peninsula

Breeding biology of Kestrel Falco tinnunculus in steppes of the southwest of the Iberian Peninsula

Nest-site selection and breeding success in the Roller Coracias garrulus in the southwest of the Iberian Peninsula

The Roller Coracias garrulus in Extremadura SW of Spain does not show a preference for breeding in clean nest-boxes

Descripción de las agrupaciones de aves limícolas (Charadrii) en un embalse del centro de la península ibérica durante un ciclo anual: zonas interiores vs. zonas litorales

Análisis mediante escuchas de la distribución de Pelodytes punctatus en la provincia de Badajoz

Egg dimensions of the Roller Coracias garrulus in farming areas of the southwest of the Iberian Peninsula

Uncommon helper behaviour in the Roller Coracias garrulus

Distribución de la Carraca (Coracias garrulus) nidificante en España

Factors affecting the nest location of three ardeidae species in heronries in the south west of Spain.

Breeding biology of Roller Coracias garrulus l. 1758 in farming areas of the southwest of the Iberian Peninsula

Variaciones en la fecha de puesta de Falco tinnunculus en Extremadura

Influencia de la edad del nidal y la presencia de otras especies sobre la fecha de puesta de la Carraca (Coracias garrulus) en estepas de Extremadura (SO Península Ibérica)

Diferencias intraespecíficas en el uso de un basurero por parte de la cigüeña blanca (Ciconia ciconia) en el oeste de la Península Ibérica

Crecimiento de los pollos de Carraca (Coracias garrulus) en medios esteparios del sudoeste de la península ibérica: influencia de las precipitaciones

A Roller Coracias garrulus presumably nesting in a nest of white stork Ciconia ciconia

Evolución del número de parejas reproductoras de Carraca Coracias garrulus en cinco hábitats de Extremadura

Selection of breeding habitats by the Roller (Coracias garrulus) in farming areas of the southwest of the Iberian Peninsula

Responses of the Crane (Grus grus) to potential predators in traditional wintering areas

Détermination de l’age des poussins de Rollier d’Europe Coracias garrulus

Status and trends of the Common Crane Grus grus in the western route

Andarríos chico.

Dieta de los pollos de carraca (Coracias garrulus) en una zona mediterránea (Extremadura, suroeste de España)

Depredación de rabilargo Cyanopica cyana sobre golondrina común Hirundo rustica