Sorry to have missed the earlier thread on this and thanks to Elena for bringing it to my attention. Seems the consensus is that it was a hybrid.
David T.: I'd be grateful for the link to the FB discussion that you mention. Willem Boulder On Monday, October 26, 2020 at 9:26:45 AM UTC-6 Charles Hundertmark wrote: > Nice set of comparative photos to support the discussion. > > Chuck Hundertmark > Lafayette, CO > > On Oct 26, 2020, at 9:20 AM, [email protected] <[email protected]> wrote: > > Last Friday, I saw what looked to me like a male Mallard x Mexican Duck > hybrid. Yellow bill, brown head with darker crown, dark eye line, and brown > tail coverts all seem to suggest male Mexican Duck. However, white in tail > and partial upcurve of central tail feathers seem to suggest male mallard > (see photos). Seen in small pond in company of group of 9 mallards on the > north-east side of Pleasant View Marsh, just west of 47th St. eBird > checklist with photos: https://ebird.org/checklist/S75280196 > > I'd welcome feedback from more knowledgeable folks. Thank you. > > Willem van Vliet > Boulder > > -- > You received this message because you are subscribed to the Google Groups > "Colorado Birds" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/cobirds/8eec5e82-bbe3-4c9f-baa7-3fbbbf7108d7n%40googlegroups.com > > <https://groups.google.com/d/msgid/cobirds/8eec5e82-bbe3-4c9f-baa7-3fbbbf7108d7n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/1d08ef70-31f0-4e1a-be0a-c1ccd92664f6n%40googlegroups.com.
