[order] Passeriformes | [family] Sylviidae | [latin] Locustella certhiola | [UK] Pallas Grasshopper-Warbler | [FR] Locustelle de Pallas | [DE] Streifenschwirl | [ES] Buscarla de Pallas | [IT] Locustella del Pallas | [NL] Siberische Sprinkhaanzanger

Siberische Sprinkhaanzanger determination

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Longer and bulkier than Grasshopper Warbler. Essentially brown and buff, softly streaked, paler birds recalling Sedge Warbler and even Moustached Warbler. In flight shows typical Locustella shape, with short, rounded wings, full rump, and broad, seemingly long and oftin fanned tail. Tail diagnostically marked, rounded feathers showing subterminal dark bands and pale tips. Sexes similar, little seasonal variation.

Breeds in east Palearctic, extending to higher middle latitudes, and through warmer continental summer climates. Also ascends higher, to sparse woodlands and alpine meadows up to 2000 m, and to margins of lakes and small bogs in mountains. Mainly, however, in valleys and lowlands, generally requiring stands of tall grass, tussocks, and hummocky meadows or river banks, which may be situated in moist sparse taiga woodlands or valley meadows with scattered trees, or on steppes in sparse stands of birch alternating with shrubs and tall grass.

In Nederland eenmaal vastgesteld in 2005 middels een netvangst

Forages in low vegetation and on ground for insects

This species has a large range, with an estimated global Extent of Occurrence of 10,000,000 kmē. The global population size has not been quantified, but it is believed to be large as the species is described as 'frequent' in at least parts of its range (Baker 1997). Global population trends have not been quantified, but the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e. declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern. [conservation status from birdlife.org]

Female builds cup nest of grass and plant material on or near ground in thick vegetation. The 5-6 eggs are incubated 12-15 days by both parents. Young leave nest after 10-15 days.

Migratory. Winters north-east India east to Indochina, south to Greater Sunda Islands. Occasional autumn records in Europe presumably due to reversed migration; British records (mostly on Fair Isle, Scotland) all September-October. Records in Afghanistan and Israel (1 record, February) presumably vagrants.