Red Knot (Calidris canutus) -> Storm Petrel (Calidris canutus) - BirdID's Bird Guide - Nord University

Species:

Red Knot (Calidris canutus)

Storm Petrel (Hydrobates pelagicus)

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Ruff

Leach's Storm Petrel

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Ruddy Turnstone

Yellow-billed Loon

Length (cm):

23-25

14-18

Wingspan (cm):

57-61

36-39

Weight (gram):

110-160

23-30

Size group:

Thrush-size

Main Texts:

Appearance:

Large, stocky Calidris. Easily identified when direct size-comparison with congeners possible. Elongated body shape and short legs. Bill robust, short and straight. Summer plumage: Upperparts speckled in brown and grey, underparts warm rufous brown, like Curlew Sandpiper. Legs dark. Winter- and juvenile plumage: Pale grey upperparts (scaly pattern in juveniles), and white belly. Legs greenish in both juveniles and winter-plumaged adults. Note pale grey rump and uniformly grey tail in flight. Wing-bars less prominent than in Sanderling.

Sound:

Most commonly heard migratory call, a short "kut" or "knot". Sometimes given in stuttering series. Song an undulating, nasal mewing "poooor-mee", or "po-hor-mee".

Contact call, song:

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See sound file

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

CC-sounds:Stein Ø. Nilsen, XC317787. Accessible at www.xeno-canto.org/317787.

Appearance:

Rarely seen, small petrel. Compact with shorter wings and tail, and blacker plumage than Leach's Storm-Petrel. Squared, unforked tail. White patch on upper tail coverts that reaches down on each side, with more square-cut edges than in Leach's. Also lacks the grey upper wing-band of latter, but shows white stripe on underside of wing. Flight-pattern bat-like with quick fluttering wing-beats and less powerful, and only short, gliding sequences. Sometimes patters with feet on the surface or rests on water. Visits breeding ground at night.

Sound:

Heard at breeding ground. Dry, cyclic, rattling and cooing, interrupted by deeper nasal moaning or a higher pitched "kee-ee-kee", with emphasis on second syllable.

Song: