Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Natural soiling has a small effect on structurally-based plumage coloration

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Animal Biology

Plumage coloration is an important trait used by birds in mate choice decisions and is often an indicator of social status. The two main types of color-producing mechanisms in feathers are pigment deposition (pigmentary coloration) or the coherent scattering of light reflected from keratin microstructure (structural coloration). External factors acting on the feather surface are also hypothesized to affect structural coloration. Because preening is an energy and time demanding behavior, color variation caused by soiling deposition is generally assumed to strengthen the condition signaling function of plumage coloration. To date, studies using artificial soiling have confirmed those hypotheses. However, information about how natural soiling affects plumage color are still scarce. In this paper, I investigated the effect of natural soiling on structurally-based feather color of blue tits Cyanistes caeruleus. As a method, I applied mechanical cleaning that functionally mimicked natural preening. Removal of soiling caused a decrease of ultraviolet (UV) chroma in males and decrease in brightness in females. According to visual contrast modeling, only changes in brightness should be perceived by birds. Further, more efficient chemical cleaning resulted in a significant increase in brightness in both sexes, presumably due to preen wax removal. These results suggest that the impact of natural feather soiling is not likely to modify structural coloration signaling. One possible explanation is that, under natural conditions, the amount of soil accumulating on feathers is too small to affect coloration.

Affiliations: 1: Department of Avian Biology and Ecology, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznán, Poland;, Email:


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Animal Biology — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation