English Language · Para Jumbles

Rearrange the given sentences to form a coherent paragraph: P. This air soon becomes warm, and, as it cannot get out, it prevents the bird's warm body from being chilled by the cold air outside. Q. When a bird goes to roost, he tucks his head under the plumage of his shoulder, and puffs out his feathers, so that the air gets in between them, and settles all among the soft down which grows close to his body. R. It is made of air. S. Birds sleep out of doors both summer and winter, and they have a curious covering to keep them warm.