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Reply	maclir1 says: At some point, you have probably heard the racist remark that "All (fill in your choice of ethnicity) look alike." This is not true, but studies have shown that to another race the differences in individuals are less obvious. If this is true among humans, think how much more alike members of another species would seem.So the answer is that while all the ducklings look nearly identical to you, to the mother duck it's obvious who belongs in the family. Not extra perception; just perception of things that fall below your threshold of notice.  (no votes) Tags: animals, human body.
	posted on 2008-02-20 23:52:00 | Report abuse

Reply	dmm says: We tried to ask the mother, but she kept ducking the question.  (no votes) Tags: animals, human body.
	posted on 2008-02-21 17:10:00 | Report abuse

Reply	Anonymous says: I was watching a teacher and her twenty boy and girl pupils walking in a line across the grass. All of a sudden a couple of other children entered the group. The teacher immediately weeded out the stranger children, even though they were wearing the same school uniform and were within the height range of the group, and sent them on their way. To us they looked identical, so just how did the teacher achieve her feat? Is it just that animals are exquisitely sensitive to visual differences between members of their own species? Or was the teacher relying on non-visual information as well, and if so, what?  (no votes) Tags: animals, human body.
	posted on 2008-02-24 23:26:00 | Report abuse

Reply	Garbo says: I always thought ducks had ducklings and not chicks! Or is the duck in question chicknapping?  (no votes) Tags: animals, human body.
	posted on 2008-03-10 12:45:00 | Report abuse

Reply	sb0070 says: I know that sheep can tell their lambs apart from the others by smell (as the lamb feeds from that particular parent) so maybe it's a similar process (although I realise that ducks don't breastfeed..)?  (no votes) Tags: animals, human body.
	posted on 2008-03-17 22:43:00 | Report abuse

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