[Tweeters] Intersex Mallard @ Black River, Renton

Jeffrey Bryant jbryant_68 at yahoo.com
Mon Mar 4 15:18:12 PST 2019

So I’ve HEARD of intersex birds, especially ducks, but never seen one until today. During a dog walk through Black River Riparian Forest, accessed from Oakesdale/Monster Rd. on western edge of Renton, I had a Mallard with female body and big black splotch on bill, but iridescent green head like a drake, save for buffy-brown cheek. Photos in ebird checklist: https://ebird.org/view/checklist/S53393579
Not as sexy (pun intended) as that gynandromorph cardinal in Pennsylvania, but still a cool bird to stumble across. Clearly paired with a “normal” male Mallard. If you believe the internet, it is probably an aging female whose estrogen levels are low.

Jeff Bryant
jbryant_68 AT yahoo

Sent from my iPad
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