Black-fronted Tern vs Arctic Tern

The Black-fronted Tern and Arctic Tern are both medium-sized terns but differ in key features. The Black-fronted Tern has a distinctive black cap and white forehead, while the Arctic Tern is known for its long tail streamers and all-black cap. Observing their habitat and behavior can also aid in identification.

1. Look for the black cap with a white forehead on the Black-fronted Tern versus the all-black cap of the Arctic Tern. 2. Note the longer tail streamers of the Arctic Tern. 3. Consider the habitat: Black-fronted Terns are more likely in riverine environments in New Zealand, while Arctic Terns are found in coastal areas during migration. 4. Listen for the distinct calls, with the Arctic Tern having a sharper, more piercing call.

Both species are similar in size, but the Arctic Tern has longer tail streamers which can make it appear more elongated in flight.

The Black-fronted Tern has a black cap with a contrasting white forehead and grey body, while the Arctic Tern has a full black cap and a more uniformly pale grey body. The Arctic Tern's tail streamers are notably longer.

Arctic Terns are known for their long migratory patterns and can often be seen hovering before diving for fish. Black-fronted Terns are more localized and may be seen foraging over rivers and lakes.

Black-fronted Terns are typically found in New Zealand's riverbeds and lakes, while Arctic Terns breed in the Arctic and sub-Arctic regions and migrate to the Antarctic.

The Arctic Tern has a high-pitched, sharp 'kee-arr' call, which is different from the Black-fronted Tern's softer and more varied calls.