/Aleutian_Tern_commons.jpg)
Onychoprion aleuticus
Basic stats
Diet
Small fish and marine invertebrates
Habitat
Coastal waters, open sea on migration
Range
Breeds Alaska and Russian Far East, winters in Southeast Asian seas
Clutch size
1–2 eggs
Incubation period
About 25 days
Size
Medium tern (32–34cm)
Wingspan
~72–80cm
Weight
~110–130g
A distinctive dark-backed tern with a white forehead patch, globally listed as Vulnerable and recorded in Borneo only as a rare/accidental passage or wintering visitor.
Feeds by plunge-diving and surface-dipping for small fish, often over shoaling prey, with its recently discovered wintering grounds in Southeast Asian seas making regional sightings especially significant for conservation.
