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Buoyant “river tern” with dramatically different breeding and non-breeding plumages.
Not listed
At a glance
FamilyGulls, Terns, and Skimmers
SizeMedium
RarityCommon
HabitatCoastlines, harbours, offshore waters, estuaries, headlands, beaches, and large inland water when conditions suit.
Best timeMost reliable in Victoria from January.
Sounds
Sound sampleRecorded by Lim Ying Hien
Range map
Range map
675visible hotspots
12969visible records
6states
SparseModerateDense hotspot
Aggregated occurance data is sourced from 14 different actively-updating datasets including eBird Australia, iNaturalist Australia, BirdLife Australia, and multiple state-based bird surveys through Atlas of Living Australia.
Species notes
Overview
Non-breeding and younger birds are white with gray patches and black “earmuffs.” In areas of overlap, juvenile told from Black Tern by dark back contrasting with lighter upperwings and white rump and by black marking above the shoulder. Non-breeding Whiskered Tern can be similar, but has a faded, patchy dark crown instead of earmuffs. Commonly found in flocks around rivers, lakes, and wetlands, where it picks food from surface instead of splash-diving; generally not as closely associated with saltwater as many typical terns.
Behavior
Breeding adult is wildly conspicuous in flight, with contrasting black-and-white plumage; at rest note white shoulders contrasting with black body.
Gallery