1. Great Cormorant Phalacrocorax carbo, juvenile, Cardiff, Wales, December 23, 2003. Note the point of whitish feathering on the throat, extending forward into the bare yellow throat skin.
2. Great Cormorant P. carbo, juvenile, Cardiff, Wales, December 23, 2003. Same individual as above. Another view of the feathering on the throat. For comparison, see the photograph of a Double-crested Cormorant P. auritus below.
3. Double-crested Cormorant P. auritus, juvenile, San Francisco, California, USA, October 10, 2003. No extension of feathering into the bare yellow throat skin.
© Stephen J. Davies