Photo of SK in a forest in Pennsylvania, wearing a tie dyed field shirt from the 2017 grassland bird Konza Crew and holding a large sparrow that is black on one side of the body and brown on the other.
Here is a photo of a trans non-binary biologist (me) holding a bird (Eastern Towhee) that is likely a bilateral gynandromorph-- a fusion of cells with female-type chromosomes and cells with male-type chromosomes in one bird!
Biological sex and human gender diversity is real and wonderful ❤️🏳️⚧️