Birds
In bird anatomy, the rump is the body immediately above the tail. The color of plumage on the rump is a characteristic widely used by ornithologists to distinguish between related species, and sometimes also between males and females of the same species. Similarly, the silhouette of the tailfan is a characteristic widely used for purposes of identification, particularly in the field.
Some birds have a food reservoir pouch in the esophagus that is known as a croup.
Read more about this topic: Rump (animal)
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“The kiss of the sun for pardon,
The song of the birds for mirth,
One is nearer God’s Heart in a garden
Than anywhere else on earth.”
—Dorothy Frances Gurney (1858–1932)
“Calico Pie,
The little Birds fly
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“Tomorrow let loveless, let lover tomorrow make love;
O spring, singing spring, spring of the world renew!
In spring lovers consent and the birds marry
When the grove receives in her hair the nuptial dew.”
—Allen Tate (1899–1979)