Charles H. Spurgeon on Psalms 74:19

Turtle Doves, of whatever species they be, whether travellers or domesticated, are equally preserved by the inhabitants of Egypt: they do not kill, and never eat them. Wishing to know the motive of this abstinence among people who possess so little in the greater part of their action, I learnt that it was for the honour of humanity. It is a consequence of the respect due to hospitality, which the Arabs hold in such high estimation, and of which they have communicated some shades to the people who dwell among them. They would regard it as a violation of this hospitality not to spare those birds, which come with a perfect confidence to live amongst them, and there to become skilful but useless receptors of love and tenderness. The very farmer, who sees his harvest a prey for the flights of turtle doves which alight on his fields, neither destroys nor harasses them, but suffers them to multiply in tranquillity. C. N.S. de M. Sonnini. 1775-1811.