 The Sind sparrow is gregarious , generally forming small groups of four to six birds while feeding . It tends to breed in loose colonies of a few pairs , and non @-@ breeding birds may gather to roost in acacias or tamarisks near water . During winter , the non @-@ breeding season , it forms larger flocks of as many as 30 birds , and joins flocks with other seed @-@ eating birds , such as house sparrows and red <unk> . The Sind sparrow feeds mainly on the seeds of grasses and other plants such as Polygonum <unk> . It may also forage for insects such as caterpillars , especially to feed nestlings . Flocks forage on flats alongside rivers , flying into nearby bushes and continuing to forage when disturbed . 
