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How old is this WBSE?

fkm

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1^# A A A Post at 27/12/2013 11:38 Show author

How old is this WBSE?

This looks like a bird not yet fully grown. I once read it takes them several years (7?) to moult into full adult plumage, may I know how old this one probably is?

2013.12.26 Sai Kung Public Pier

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tsheunglai

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2^# A A A Post at 27/12/2013 21:12 Show author

Second-year bird according to Ferguson-Lees', well-advanced to 3rd, I believe.

S L Tai

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gary

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3^# A A A Post at 27/12/2013 21:29 Show author

Yes, a juenvile born last year (2012).
WBSE takes about 6 years to attain full adult plumage.

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fkm

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4^# A A A Post at 29/12/2013 00:39 Show author

Thank you SL and Gary for your kind advices!

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