Skip to main content
padlock icon - secure page this page is secure

Moult patterns in the Long-tailed Hawk Urotriorchis macrourus

Buy Article:

$60.00 + tax (Refund Policy)

Information is presented on moult of the Long-tailed Hawk Urotriorchis macrourus, based on 51 specimens. The postjuvenile primary moult is descendant, but the annual primary moult is descendant in about half of the cases only and regular serial descendant moult was found in a few, but different asymmetrical patterns occur in other specimens, probably in relation to accidental replacements, physiological stress or consecutive breeding attempts. As in some other raptors, the brown juvenile central pair of rectrices is replaced by the piebald new generation of feathers before the body and primary moults. These feathers probably signal the individual's status as a potential breeder. As in several other very long-tailed birds, annual rectrix replacement is a permanent ongoing process, which is largely asymmetrical, particularly in the central two pairs, resulting in one feather having always a new contrasting aspect, which may help in signalling status.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: October 1, 2007

More about this publication?
  • Co-Published by NISC and Taylor & Francis - Subscriber access available here
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more