Corns...boas…

I thought people might find it interesting that stargazing also occurs in some birds. Gouldian finches seem to be afflicted more often than many others. Some people have blamed various vitamin/nutrient deficiencies. Others believe it's caused by skull injuries. The top of the skull is very thin, and startled finches dart straight up: in a cage or small flight it's not hard to imagine them hitting their heads.

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