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

Covariation between bill colouration and fitness components in a nocturnal bird

(2012) Jesús M. Avilés et al.   JOURNAL OF AVIAN BIOLOGY

Bill coloration, a flexible signal in a tropical passerine bird, is regulated by social environment and androgens

(2011) Jordan Karubian et al.   ANIMAL BEHAVIOUR

Honest begging: expanding from Signal of Need

(2011) D. W. Mock et al.   BEHAVIORAL ECOLOGY

The effects of preen oils and soiling on the UV–visible reflectance of carotenoid-pigmented feathers

(2011) Lorenzo Pérez-Rodríguez et al.   BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY

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

(2011) Jesús M. Avilés et al.   BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY

Proximate Correlates of Carotenoid-Based Mouth Coloration in Nestling House Sparrows

(2011) Matthew B. Dugas et al.   CONDOR

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

(2011) JUAN RODRÍGUEZ et al.   IBIS

Integument coloration signals reproductive success, heterozygosity, and antioxidant levels in chick-rearing black-legged kittiwakes

(2011) Sarah Leclaire et al.   NATURWISSENSCHAFTEN

Sense and sensitivity: responsiveness to offspring signals varies with the parents' potential to breed again

(2011) R. Thorogood et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Dissecting Carotenoid from Structural Components of Carotenoid‐Based Coloration: A Field Experiment with Great Tits (Parus major)

(2010) Alain Jacot et al.   AMERICAN NATURALIST

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

(2010) Carlos Navarro et al.   BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY

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

(2010) Deseada Parejo et al.   OECOLOGIA

Limits of colour vision in dim light

(2010) Almut Kelber et al.   OPHTHALMIC AND PHYSIOLOGICAL OPTICS

Mouth coloration in nestling birds: increasing detection or signalling quality?

(2009) Karen L. Wiebe et al.   ANIMAL BEHAVIOUR

House sparrow, Passer domesticus, parents preferentially feed nestlings with mouth colours that appear carotenoid-rich

(2009) Matthew B. Dugas   ANIMAL BEHAVIOUR

Visual cues and parental favouritism in a nocturnal bird

(2009) D. Parejo et al.   Biology Letters

Nestlings’ carotenoid feather ornament affects parental allocation strategy and reduces maternal survival

(2009) M. GRIGGIO et al.   JOURNAL OF EVOLUTIONARY BIOLOGY

The intensity threshold of colour vision in two species of parrot

(2009) O. Lind et al.   JOURNAL OF EXPERIMENTAL BIOLOGY

The Dusk Chorus from an Owl Perspective: Eagle Owls Vocalize When Their White Throat Badge Contrasts Most

(2009) Vincenzo Penteriani et al.   PLoS One

Dark Nests and Conspicuousness in Color Patterns of Nestlings of Altricial Birds

(2008) Jesús M. Avilés et al.   AMERICAN NATURALIST

Experimental support for the makeup hypothesis in nestling tawny owls (Strix aluco)

(2008) Romain Piault et al.   BEHAVIORAL ECOLOGY

Ultraviolet reflectance of plumage for parent–offspring communication in the great tit (Parus major)

(2008) Marion Tanner et al.   BEHAVIORAL ECOLOGY

A dusk chorus effect in a nocturnal bird: support for mate and rival assessment functions

(2008) Loïc A. Hardouin et al.   BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY

Spectral mouth colour of nestlings changes with carotenoid availability

(2008) R. Thorogood et al.   FUNCTIONAL ECOLOGY

Ultraviolet-blue reflectance of some nestling plumage patches mediates parental favouritism in great tits Parus major

(2008) Ismael Galván et al.   JOURNAL OF AVIAN BIOLOGY

Nestling colouration is adjusted to parent visual performance in altricial birds

(2008) J. M. AVILÉS et al.   JOURNAL OF EVOLUTIONARY BIOLOGY

Condition dependence of nestling mouth colour and the effect of supplementing carotenoids on parental behaviour in the hihi (Notiomystis cincta)

(2008) John G. Ewen et al.   OECOLOGIA

Effects of Experimental Brood Size Manipulation and Gender on Carotenoid Levels of Eurasian Kestrels Falco tinnunculus

(2008) Toni Laaksonen et al.   PLoS One