-
distinguishable from adults.
Terns have a non-breeding plumage,
which usually involves a
white forehead and much-reduced
black cap.
Terns are long-lived birds...
-
large tern is
closely related to the
royal and
lesser crested terns, but can be
distinguished by its size and bill colour. The
greater crested tern has...
-
jointly recorded as "commic
terns".
Although similar in size, the two
terns differ in
structure and flight. The
common tern has a
larger head, thicker...
-
other crested terns. The West
African crested tern (Thal****eus albididorsalis) was
formerly considered to be a
subspecies of
royal tern. It was elevated...
-
forked than
other terns, and
wingtips are
black on the underside. In winter, the
black cap is
still present (unlike many
other terns), but with some white...
-
through the
tropical oceans. It has very
marine habits compared to most
terns;
sooty terns are
generally found inland only
after severe storms. The
Field Museum...
-
aggressive species such as
Arctic terns and black-headed
gulls to
avoid predation. Like all Thal****eus
terns, the
Sandwich tern feeds by plunge-diving for fish...
-
Antarctic tern closely resembles the
Arctic tern. However, the
local Antarctic Terns are in
their breeding plumage when the
migrating Arctic Terns arrive...
-
avoid predation. The
elegant tern feeds by plunge-diving for fish,
almost invariably from the sea, like most Thal****eus
terns. It
usually dives directly...
-
fairy terns was less than 15%. The low
breeding success of New
Caledonian fairy terns is
similar to that of the
endangered New
Zealand fairy tern. Further...
