where can this species be found?
Eastern Asia from the Ob River northeast to Kamchatka and east to the Kuril Islands, Sakhalin and Japan.
Pacific swift
eastern Asia from the Ob River northeast to Kamchatka and east to the Kuril Islands, Sakhalin and Japan. 
what is pacific swift? A species of bird. which family does it belong to? Swift family. how does it look like? The general shape and blackish plumage recall its relative, the common swift, from which it is distinguished by a white rump band and heavily marked underparts. could you please describe its call? This swift's main call is a screech typical of its family. what does it eat? All swifts feed on insects caught in flight.
wiki:13377035
Pacific swift [SEP] Distribution and habitat
The nominate subspecies, "A. p. pacificus", breeds in eastern Asia from the Ob River northeast to Kamchatka and east to the Kuril Islands, Sakhalin and Japan. It is strongly migratory, wintering in southern Indonesia, Melanesia and Australia, including Tasmania. It is a common migrant through coastal Malaysia, Sumatra and Java with "vast numbers" crossing the Strait of Malacca. Subspecies "A. p. kurodae" breeds from southeastern Tibet through eastern China to southern Japan, Taiwan and Orchid Island. It is a relatively short-distance migrant, wintering in the Philippines, Malaysia and northern Indonesia. As a powerful long-distance migrant, the nominate subspecies of Pacific swift has occurred as a vagrant far from its normal range.