id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
darwin-descent-1852		darwin-descent-1852			.txt	text/plain	280122	14029	68	parent-species, he differs also from the young male, so that the newlyacquired characters must have appeared at a rather late period of life. Mr. Baker of Leadenhall from eggs laid by wild birds, and he informs Mr. Jenner Weir that four or five males to one female are generally produced. few other species, the males differ slightly in colour from the females; Causes of the difference in colour between the males and females--Mimicry, Causes of the difference in colour between the males and females--Mimicry, the males and females of certain species, and alike in the two sexes of males whilst young resemble the adult females in colour and structure. many species, the males whilst young resemble the females in colour; but that male birds, though dull-coloured, often differ much from their females when the male differs from the female, the young of both sexes almost	./cache/darwin-descent-1852.txt	./txt/darwin-descent-1852.txt