Notes: Rare sea-tern. Like Arctic or
Common Tern but
short-necked, shorter wings, trailing edge
to primaries more marked.
White-fronted Tern has a
longer bill. Non-breeding: black half cap;
no dark carpal-bar (cf
Common Tern). Juvenile: distinctive
black & buff barring on upperparts,
fine buff & brown mottling
on breast, black subterminal barring to tail. Breeds on & near
Antarctic Peninsula, incl Macquarie Isl.