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Wednesday, March 23, 2016
CASPIAN VS ROYAL TERN, GOODLAND, MARCO ISLAND, FL
On a sandbar off of Goodland we sighted quite a few terns. They seemed to be a mixture of Caspian Terns and Royal Terns. The two species of terns are difficult to tell apart, particularly when they are in breeding plumage. Here's how we differentiated them:
- The tern in the first photo is a breeding Caspian Term - it has a more reddish bill with a dark tip. Also the black cap lays flat.
- The tern in the second photo is a breeding Royal Tern - it has a more orangish bill and no dark tip. Also, if you look closely you can see that the black cap slightly swoops back.
- The tern in the third photo is a nonbreeding Caspian Tern - Again it has a more reddish bill with a dark tip. It is nonbreeding because it has a dusky forehead, rather than a completely black head and forehead of the breeding Caspian Tern.
Tuesday, March 22, 2016
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