Species:

Grey Partridge (Perdix perdix)

Swift (Apus apus)

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Length (cm):
29-31
16-17
Wingspan (cm):
45-48
42-48
Weight (gram):
340-450
31-56
Size group:
Warbler-size
Thrush-size
Main Texts:
Appearance:

Small, grey gamebird, with brick-red throat, face and eyestripe. Adults with dark brown, kidney-shaped belly-patch. Female less brightly coloured than male, with less red in face. The belly-patch is smaller, or lacking altogether. Brick-red tail diagnostic in flight.

Sound:

Song a sharp, very raspy sound, e.g. "krii-uuu-ii", with middle part lowered in pitch. Often compared to the sound of a rusty gate. Also various clucking sounds.

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-sound:Peter Boesman, Licence,Link.

Appearance:

All black swift with small white throat patch. Very difficult to separate from Pallid swift and Plain Swift. Pallid Swift; brownish plumage tone (best seen against darker background), bigger throat-patch than swift, scale pattern on body more prominent, wing-tips slightly rounded, "saddle" darker than wings, and more contrast between darker outer primaries and inner. Plain Swift; throat patch smaller and more diffuse than swift, wings and body more slender, tail noticeably deeper forked.

Sound:

A shrilling trill "zreeeee" of about 1 -2 seconds length, gradually rising in pitch with accentuated firs half, then falling from the middle of phrase. Often continued with a dry lower pitched "trrrrrr" before calling again. Very vocal at breeding area, and often a flock will call together. Despite being quite similar to Pallid Swift, the call is probably the best field character to separate the two. Pallid puts the stress on the ending of the call, followed by a quick fall in pitch (dynamics like moaning with a quick release). Plain Swift calls similar to Common Swift, but differs in slightly fluctuating pitch during the call, and a loss of resonance towards the ending (thinner sounding).

Song/contact call:

Error loading Flash for sound!
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

Similar species (image):
Similar species (sound):
Silhouette Group:
Grouse-like
Silhouette
Swallow-like
Silhouette
Several different images of the species
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Several different sounds of the species
Error loading Flash for sound!
See sound file