Date: 5/22/20 10:01 am From: Art Check via groups.io <artsbirdbrain=<yahoo.com...> Subject: Re: [NEBirds] Brewster's Hybrid info
> On May 21, 2020, at 9:40 PM, Phil Swanson <pswanson19...> wrote:
> This is a follow-up to my previous email on the F2 backcross Brewster’s that I saw in my yard.
> The offspring of a pure Golden-winged Warbler that breeds with a pure Blue-winged Warbler is an F1 hybrid. The F2 hybrid is the result of a F1 breeding with a Golden-winged Warbler.
> Phil Swanson
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