Pallas's Warbler vs Eastern Crowned Warbler

In short

The most reliable field mark to differentiate Pallas's Warbler from Eastern Crowned Warbler is the presence of a distinct yellow central crown stripe in the Eastern Crowned Warbler, which Pallas's Warbler lacks. Both species have a similar structure, but the Eastern Crowned Warbler is slightly larger.

Identification tips

• Look for the yellow central crown stripe on Eastern Crowned Warbler.
• Note the size difference, with Eastern Crowned Warbler being slightly larger.
• Observe the overall coloration; Pallas's Warbler may appear more yellowish.

Size

Eastern Crowned Warbler is slightly larger than Pallas's Warbler.

Plumage

Eastern Crowned Warbler has a distinct yellow central crown stripe, whereas Pallas's Warbler does not. Both species have a greenish upperpart and pale underparts, but Pallas's Warbler often shows a more pronounced yellowish tinge.