No, that study doesn't show anything of the sort. All it shows is that you can train chickens to distinguish between male & female humans by giving them food if they peck correctly. This, the authors claim, supports the hypothesis that preferences for how a member of a particular sex should look like in animals may be due to internalised method/patterns of distinguishing between the sexes -- which can be taught, and could for instance be due to what tasks are associated with males or females. In other words: wearing of ties might be associated with dad, therefore a kid learns that if it wears ties it's probably a man...
Then it goes on to show that chickens get better at pecking correctly the more humans would find the subject an attractive date, based on nothing more than a picture of their face.
What it doesn't show is that chickens in their natural habitat have somehow even vaguely similar sexual preferences as humans. Or anything of much significance, really. (Especially considering the staggering sample size of 14 people... How impressive! )
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