Aging immature black-browed and grey-headed albatrosses using moult, bill and plumage characteristics

We describe how to age immature Black-browed Diomedea melanophris and Grey-headed Albatrosses D. chrysostoma up to age 6 years (when they have usually acquired adult characteristics), from a combination of the age and pattern of moult of flight feathers, bill colouration and certain plumage characteristics. This is based on known-age birds retrapped at colonies during the breeding season. Ageing of immatures at other times may be complicated by them being in active moult; we provide further guidance for these circumstances.

Details

Publication status:
Published
Author(s):
Authors: Prince, P.A., Rodwell, S.P.

Date:
1 January, 1994
Journal/Source:
Emu / 94
Page(s):
246-254
Digital Object Identifier (DOI):
https://doi.org/10.1071/MU9940246