ML624474567

影音備註

First-cycle

觀察細節

First cycle. Photos. Diminutive "large Gull" with long wings, broad dark centers to scapulars with smooth pattern with narrow pale fringing. All black bill, flat head. Inner primaries all dark, secondaries blackish, noticeably contrasting with greater secondary coverts. Blackish tail with pale white uppertail coverts with limited black markings. Tertials black with narrow white margins. Face palish, except for darker auriculars creating a masked appearance.

其他鳥種

• Ring-billed Gull Larus delawarensis