Common Tern: Dr. J. Murray Speirs

Common Terns occur in both the Old World and in America.

Common Tern
Common Tern
Common Tern

In Ontario they breed on exposed shores from Lake Erie north to the northern limit of the Precambrian Shield.

Common Tern
Common Tern
Common Tern

Banding has shown that our birds winter south to Ecuador in South America.

Common Terns
Common Terns
Common Terns

Adults are difficult to distinguish in the field from Forster’s and Arctic Terns. The combination of red bill with black tip, white tail with thin black outer edges, the “tee-arrr” call are filed marks of adults: the young have black napes.

These three species are about the size of Bonaparte’s Gull but have much more deeply forked tails and lack the black hood of adult Bonaparte’s Gull.

Common Terns
Common Tern
Common Terns
Common Terns
Common Terns
Common Terns

Dr. J. Murray Speirs

Leave a Reply

Your email address will not be published.