Grey Phalarope vs Red-necked Phalarope

In short

The Grey Phalarope (Red Phalarope) and Red-necked Phalarope are similar pelagic birds, but can be distinguished by bill size and plumage details. Grey Phalaropes have thicker bills and are generally bulkier, while Red-necked Phalaropes have finer bills and more slender bodies.

Identification tips

1. Bill Size: Grey Phalaropes have thicker bills; Red-necked Phalaropes have finer bills. 2. Body Structure: Look for the bulkier body of the Grey Phalarope compared to the slender Red-necked Phalarope. 3. Habitat: Consider the habitat; Grey Phalaropes are more pelagic. 4. Behavior: Observe feeding behavior; spinning is more typical of Red-necked Phalaropes.

Size

Grey Phalaropes are bulkier with heavier bodies compared to the more slender Red-necked Phalaropes.

Plumage

In non-breeding plumage, both species are largely white with gray mantles and black eye-patches. However, Grey Phalaropes have thicker bills and more robust body structure, while Red-necked Phalaropes have finer bills and are more slender.

Behaviour

Both species exhibit reversed sexual dimorphism and are polyandrous, with females being more brightly colored. Red-necked Phalaropes are known for their spinning behavior to lift prey, which is less commonly observed in Grey Phalaropes.

Habitat

Grey Phalaropes are more pelagic, often found in wading-depth waters, while Red-necked Phalaropes can be found in swimming-depth waters and are more likely to use inland bodies of water during migration.