Do grooming behaviours affect visual properties of feathers in male domestic canaries, Serinus canaria?

Publication Type:Journal Article
Year of Publication:2009
Authors:Lenouvel, P, GOMEZ, DORIS, Th, Kreutzer, M
Journal:Animal Behaviour
Volume:77
Issue:5
Date Published:2009
ISBN Number:0003-3472
Keywords:domestic canary, Fringillidae, grooming behaviour, physiological model, plumage coloration, Serinus, Serinus canaria, Serinus serinus, visual signal
Abstract:Elaborate secondary sexual traits, such as plumage ornaments, are important signals in reproductive communication and so it is important to maintain them in good condition. Time and energy spent in their maintenance reinforce the honesty of the ornamental traits. Variation in plumage visual properties as a function of maintenance has until now received little attention. Here, we used a combination of spectroradiometric measurements of plumage coloration, a physiological model of bird vision and behavioural observations to investigate how grooming behaviours affect plumage coloration in experimentally soiled male domestic canaries. Although showing a similar total amount of grooming, dirty males showed more feather ruffling and less preening than control males, suggesting that removal of dirt does not require an increase in grooming activity and that ruffling is likely to be more efficient for removing dirt. Grooming activities were not correlated with changes in plumage reflectance, probably because the same grooming behaviour is more efficient at removing feather dirt when performed by some individuals than by others. Dirty males were distinguishable in coloration up to 2.5
URL:http://www.sciencedirect.com/science/article/pii/S0003347209000736
Short Title:Animal Behaviour
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith