The theory that homosexuality of birds is based on the survival strategy is advocated

ByYai & amp; JR

Before,There is a possibility that the occurrence of pairing between male of Shirochitoki is due to ingestion of mercuryI posted the article called. Apart from that,Zebra finchYaBeard penguinIt seems that it has come to know that the same kind of pairing occurs in the state of nature and this is based on a certain kind of survival strategy.

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In the example of a quince bluebird, about half of the birds seem to have formed a pair with the same sex when isolating a male only group. I also added females there, and five pairs out of the eight pairs kept male pairs ignoring newly joined females.

In the ecology of the quince bluebirds, in the usual pairing, there is a characteristic that "Once you've formed a pair, you will always be able to achieve it", and the male and the female cooperate together to make a nest.


In addition, male bearded penguins Roy and Silo kept at Central Park Zoo in Manhattan did not show interest in nearby females, they seem to have formed a male pair with each other. They made nests together and hatched the eggs they kept from other pairs.


Dr. Julie Elie of the University of California, Berkeley said, "Relationships among animals are not just relationships for mating with male and female, but are more complicated.In our observations, We have arrived at an amazing conclusion that it has the same interdependence as the pairing due to heterosexuality. "

In a study by Dr. Elie et al., The formation of pairs by the same sex is a survival strategy, and it is thought that birds are acquiring the technique to protect themselves from carnivorous beasts etc. by forming a pair.

Dr Elie said, "In a species that forms a pair of monogamy, the formation of pairing itself will lead to a superiority in survival, having a social partner is the sex of the opponent Whatever it is, there is priority in itself. "