dreamstime_xs_3606213A study has shown that same-sex zebra finch couples stay in affectionate relationships as long as their heterosexual counterparts.

The study was printed in the Behavioural Ecology and Sociobiology journal.

The scientists who conducted the study found that the gay birds sang to each other as much as opposite-sex couples.

Singing is frequently used by zebra finches to strengthen their bond.

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