birdhybrids.blogspot.com has some fairly extensive discussion of waterfowl hybrids, with contributions from a number of Colorado birders. See, for example, http://birdhybrids.blogspot.com/2014/02/rosss-goose-x-cackling-goose.html or http://birdhybrids.blogspot.com/2014/02/snow-goose-x-cackling-goose.html . The identifications in these examples are based on observed morphological details, not DNA.
Along these lines, in our area a dark-bodied goose with a whitish head/neck is much more likely to be a hybrid than a dark morph Snow or Ross's. I have appreciated the kind guidance of eBird reviewers and other experts in reminding me about this! Peter Ruprecht Superior On Mon, Dec 7, 2020 at 11:17 AM Derek Hill <[email protected]> wrote: > > There is, as to be expected, an influx of goose reports for our state. Via > ebird, there are incoming reports of the gamut: cacklingXross's, > cacklingXsnow, canadaXsnow, canadaXross's, snowXross's. > > How are these hybrids being specifically identified? Can anyone share some > data or research of hybrids of known parental provenance that would aid or > even remotely make possible these identifications? > > Good birding, > Derek Hill > Loveland, CO > > -- > 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/b554de9f-4ee2-405a-8468-1128892fe3a9n%40googlegroups.com > <https://groups.google.com/d/msgid/cobirds/b554de9f-4ee2-405a-8468-1128892fe3a9n%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/CAHPXVBYdYsqF%2Bhu6dDYP9rufz%2B5b9HJVEp%2BMjRRLY2wOBETEBQ%40mail.gmail.com.
