Hen in Wikipedia

Cock, Hen. - Domestic poultry are not mentioned till after the Babylonian captivity. In Jesus' time domestic poultry, introduced from India through Persia, had become common, and their well-known habits gave rise to familiar expressions, and afforded good and easy illustrations (Mark 13:35; 14:30, etc.). Jesus Christ compared His care for Jerusalem to that of a hen for her brood. The three times the word 'cock' appears in the D.V. it is owing to a misinterpretation of the primitive text.

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