Carotenoid-based bill coloration functions as a social, not sexual, signal in songbirds (Aves: Passeriformes)

Migration and the evolution of duetting in songbirds

(2014) D. M. Logue et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Immune function is related to adult carotenoid and bile pigment levels, but not to dietary carotenoid access during development, in female mallard ducks

(2013) M. W. Butler et al.   JOURNAL OF EXPERIMENTAL BIOLOGY

The global diversity of birds in space and time

(2012) W. Jetz et al.   NATURE

Sexual selection is a form of social selection

(2012) B. E. Lyon et al.   PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Carotenoid-based signals in behavioural ecology: a review

(2011) Svensson et al.   BEHAVIOUR

phytools: an R package for phylogenetic comparative biology (and other things)

(2011) Liam J. Revell   Methods in Ecology and Evolution

Human Vision Can Provide a Valid Proxy for Avian Perception of Sexual Dichromatism

(2010) Nathalie Seddon et al.   AUK

Bill color, not badge size, indicates testosterone-related information in house sparrows

(2010) Silke Laucht et al.   BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY

Short-term exposure to testosterone propionate leads to rapid bill color and dominance changes in zebra finches

(2010) Daniel R. Ardia et al.   HORMONES AND BEHAVIOR

Feather ornaments are dynamic traits in the Great Tit Parus major

(2010) PETER ADAMÍK et al.   IBIS

Female American goldfinches use carotenoid-based bill coloration to signal status

(2009) Troy G. Murphy et al.   BEHAVIORAL ECOLOGY

Co-evolution of plumage characteristics and winter sociality in New and Old World sparrows

(2009) E. A. TIBBETTS et al.   JOURNAL OF EVOLUTIONARY BIOLOGY

Quantifying avian sexual dichromatism: a comparison of methods

(2008) J. K. Armenta et al.   JOURNAL OF EXPERIMENTAL BIOLOGY

A Phylogenomic Study of Birds Reveals Their Evolutionary History

(2008) S. J. Hackett et al.   SCIENCE

Scaling regression inputs by dividing by two standard deviations

(2007) Andrew Gelman   STATISTICS IN MEDICINE