swallow

Swallows belong to the bird family of Hirundinidae. They have a fork-shaped tail, a melodious call and a graceful flight. The feathers are blue on the back and orange on the belly. They are migrant birds in fact in spring they move from the southern hemisphere to the northern one where they stay till the autumn. They are used to make mud nests under the roof houses where they are protected by rain and wind.

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