Yellow-legged Gull (Larus michahellis) -> Sedge Warbler (Larus michahellis) - BirdID's Bird Guide - Nord University

Species:

Yellow-legged Gull (Larus michahellis)

Sedge Warbler (Acrocephalus schoenobaenus)

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Iceland Gull

Blyth's Reed Warbler

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Herring Gull

Moustached Warbler

Length (cm):

59-67

13-13

Wingspan (cm):

140-158

17-21

Weight (gram):

750-1500

9-15

Size group:

Crow-size

Sparrow-size

Main Texts:

Appearance:

Very similar to Herring Gull, and not always possible to identify with certainty. Generally thicker neck, rounder head and longer wings than Herring Gull. Adults: Silvery upperparts, bright yellow legs (beware that it is not uncommon for Herring Gull to have yellow legs!), and more black and less white in wing-tips. Bill heavier than H.G. with markedly curved tip. Orbital ring red, not orange. Big, red gonys spot, often extending to upper mandible. Marked gonys angle. Primary feather P5 (counted from innermost feather in gulls) usually with broad, black band. In winter plumage head is less streaked than in H.G., and often completely white. Immatures first winter: Pale belly and head. Dark underwings with blotchy markings. Only vague pale window of inner primaries, and well defined, wedge-shaped tail-band. Dark base of bill. For a detailed account of all plumages see Gull Research.

Sound:

Voice more nasal than Herring Gull, but ID by sound difficult.

Distribution:

Wikipedia: map (se also Xeno-canto below)

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

Featherbase

CC

Appearance:

Small and compact, brown warbler with strong supercilium and streaked back. Crown dark with faint streaking, contrasting with broad supercilium. Rump unstreaked and warmer brown than back and tail. Juveniles with faintly streaked chest. Long primary projection. Body shorter and more compact than Reed Warbler. Easiest Achrocephalus to see in the region. Often sings from exposed branch or reed, is inquisitive and not very shy.

Sound:

Alarm call a hard "check". Anxiety call a dry and rolling "rrrrr". Song vigorous and varied. A mixture of musical sounds, expert mimicry and characteristic harsh and strident calls. Not as rhythmic and evenly paced as Reed Warbler, but varies tempo a lot.

Song: