ranon.2011's picture

Black Swan

Observed: 28th December 2011 By: ranon.2011ranon.2011’s reputation in Birdsranon.2011’s reputation in Birdsranon.2011’s reputation in Birdsranon.2011’s reputation in Birdsranon.2011’s reputation in Birds
28.12.2011 Swan - Black (19)
Description:

This was the only one in the park today and I wondered if this is a juvenile. Can anyone confirm my thoughts or put me right?

Identifications
Species interactions

No interactions present.

Comments

ophrys's picture

Adult

I think that this is an adult, as the bill pattern and the red iris colour suggest maturity. However, juveniles get the adult bill colour after only a few months, apparently,so it is not that clear cut. Iris colour is probably the best suggestion that this is an older bird, I think. I reckon we can say that it was not born this year, anyway.

Ian
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ranon.2011's picture

Thanks Ophrys, interesting to

Thanks Ophrys, interesting to follow up.