Breeding Season of River Tern
River Tern is the species that breeds from March to May in colonies in less accessible areas such as sandbanks in rivers.
Nests of River Tern
River Tern nests in a ground scrape regions and it is often on bare rock or sand, and lays three greenish-grey to buff eggs, which are blotched and streaked with brown.
Sizes of River Tern
River Tern is a medium-sized tern, 38 to 43 cm long with dark grey upperparts, white under parts, a forked tail with long flexible streamers, and long pointed wings. The bill is yellow and the legs red. It has a black cap in breeding plumage. In the winter the cap is greyish white, flecked and streaked with black, there is a dark mask through the eye, and the tip of the bill becomes dusky.
Sexes of River Tern
The sexes of River Tern are similar but juveniles have a brown head, brown-marked grey upperparts, grey breast sides and white under parts. The bill is yellowish with a dark tip
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