Slaty-backed Gull vs White Tern

In short

The Slaty-backed Gull and White Tern are easily distinguished by their size and coloration. The Slaty-backed Gull is a large, robust gull with a dark slate-gray back, while the White Tern is a smaller, delicate bird with entirely white plumage. Observing these features should quickly resolve any confusion.

Identification tips

1. Size and shape: Look for the larger size and bulkier build of the Slaty-backed Gull compared to the slender White Tern. 2. Plumage: Note the dark slate-gray back of the Slaty-backed Gull versus the all-white plumage of the White Tern. 3. Habitat: Consider the location; Slaty-backed Gulls are more likely in temperate coastal areas, while White Terns are found in tropical oceanic regions. 4. Behavior: Observe the flight pattern; White Terns hover more gracefully compared to the more direct flight of Slaty-backed Gulls.

Size

The Slaty-backed Gull is significantly larger and bulkier than the White Tern.

Plumage

The Slaty-backed Gull has a dark slate-gray back and wings with a white head and underparts, whereas the White Tern is entirely white, lacking any dark markings.

Behaviour

Slaty-backed Gulls often forage along coastlines and are seen in flocks, while White Terns are more solitary or seen in pairs, often hovering gracefully over water.

Habitat

Slaty-backed Gulls are typically found in coastal regions, especially near harbors and beaches. White Terns prefer tropical and subtropical oceanic islands and are often seen over open ocean.

Voice

Slaty-backed Gulls have a typical gull-like call, which is loud and harsh. White Terns are generally quieter, with softer, more high-pitched calls.