Lesser Crested Tern vs Great Crested Tern

In short

The Lesser Crested Tern and Great Crested Tern are similar in appearance but can be distinguished by their bill color and subtle plumage differences. The Lesser Crested Tern typically has an orange bill, while the Great Crested Tern's bill is yellow. Both species share similar habitats and behaviors, but careful observation of these features can aid in identification.

Identification tips

1. Bill Color: Look for the Lesser Crested Tern's orange bill versus the Great Crested Tern's yellow bill. 2. Plumage: Note the slightly paler grey upperparts of the Lesser Crested Tern. 3. Head: During breeding, observe the extent of the black cap, which is more pronounced in the Great Crested Tern. 4. Size: The Great Crested Tern is marginally larger, though this can be difficult to assess without direct comparison.

Size

Both species are similar in size, with the Great Crested Tern being slightly larger overall.

Plumage

The Lesser Crested Tern has a slightly paler grey upperwing and back compared to the Great Crested Tern. Both species have a black cap during breeding season, but the Great Crested Tern's cap extends further down the nape.

Behaviour

Both species exhibit similar behaviors, such as plunge-diving for fish and forming large, noisy colonies during breeding.

Habitat

Both species are found in coastal regions, often around sandy beaches and islands. They may be seen together in overlapping ranges, particularly in tropical and subtropical regions.

Voice

Vocalizations are similar, with both species producing harsh, grating calls. Distinguishing them by sound alone can be challenging.