The swallows signal other birds when in danger .Its sounds less noisy sweet it dings when it feels ease it Twitter when it wonders.it sounds when any one observes it's language
eventually pigeons occured in groups sometimes in pairs it pecks the grains by its conical beaks and do not chew it grinds in such a way that corps milk when it intends to feed its young ones the young ones in nests sounds when hungry pigeons feels its signal and the pre digested milk namely corps milk it feeds its young ones while we look at this bird this bird is a passionate calm and never qurrel among other fellow birds
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