I had two male mallards. After the first molt, one turned female feathered and they were inseparable.
One of my female Swedes got attacked by a dog while on a nest. They then switched to male colors and stopped laying.
If InGen scientists had anticipated it, they would have sprayed the island with Atrazine (a common herbicide) to suppress protogyny in their dinosaur populations
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One of my female Swedes got attacked by a dog while on a nest. They then switched to male colors and stopped laying.
I hope this is satire.