Williamson's Sapsucker vs Yellow-bellied Sapsucker

In short

Williamson's Sapsucker and Yellow-bellied Sapsucker are both medium-sized woodpeckers with distinct plumage differences. Males of Williamson's are strikingly black with red, yellow, and white, while Yellow-bellied males have a more subdued pattern with a red throat and cap. Females of Williamson's are cryptic brown, contrasting with the more uniformly patterned Yellow-bellied females.

Identification tips

1. Plumage: Look for the striking black and red plumage of Williamson's males and the brown plumage of females. Yellow-bellied males have a red throat and cap. 2. Habitat: Consider the habitat; Williamson's prefers coniferous forests, while Yellow-bellied is found in mixed forests. 3. Season: Be aware of the breeding ranges; Yellow-bellied breeds east of the Rockies.

Size

Both species are similar in size, typical of medium-sized woodpeckers.

Plumage

Williamson's Sapsucker males are black with bright red throats, yellow bellies, and white wing patches. Females are mostly brown with a yellow belly. Yellow-bellied Sapsucker males have a red throat and cap, with a black and white face pattern and a yellowish belly. Females are similar but with less red on the head.

Behaviour

Both species drill sap wells in trees, but Williamson's Sapsucker specializes in coniferous trees, while Yellow-bellied Sapsucker may use a wider variety of tree species.

Habitat

Williamson's Sapsucker is typically found in coniferous forests, while Yellow-bellied Sapsucker breeds east of the Rocky Mountains in mixed forests.

Voice

Vocalizations are not well-documented in the notes, but both species have typical sapsucker drumming patterns.