Bob Flood and colleagues have published in the journal British Birds on ageing criteria for ACAP-listed Black-browed Albatrosses Thalassarche melanophris.
The paper’s abstract follows.
“The basics of moult, wear, plumage and bill colour are described and illustrated for the Black-browed Albatross Thalassarche melanophris. Ageing criteria are presented for birds up to six years old, after which the majority cannot be aged accurately.”
Black-browed Albatross, photograph by John Larsen
Flood, B., Fisher, A. &Gale, J. 2015. Ageing criteria for the Black-browed Albatross. British Birds Vol. 108.
John Cooper, ACAP Information Officer, 13 September 2015