One of several medium-sized terns that is similar in appearance, the Forster's Tern breeds primarily in marshes and winters along the coasts. The comma-shaped black ear patch in winter plumage is distinctive, but some other plumages are very confusing.
Forster's Tern is the only tern restricted almost entirely to North America throughout the year.
Spawning common carp are so vigorous that they can dislodge Forster's Tern eggs from floating nests.
Forster's and Black terns breed near each other in marshes. Wandering semi-pre social young may account for observations of each species feeding the other's young.
Photographed at Etobicoke Creek, Etobicoke, ON
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