FYI, white-throated sparrows are not sexually dimorphic -- meaning a
normal human can't tell male from female in the field. But they do
have two morphs -- bright-striped and tan-striped -- with an
interesting cross-preference relationship (see
I've had both color morphs at my feeders this week.
Sent from my iPad
On Apr 29, 2013, at 7:10 PM, Suan Hsi Yong suan.y...@gmail.com wrote:
FYI, white-throated sparrows are not sexually dimorphic -- meaning a
normal human can't tell male from female in the field. But they do
have two
-7495...@list.cornell.edu] On Behalf Of Suan Hsi Yong
Sent: Monday, April 29, 2013 7:10 PM
Cc: CAYUGABIRDS-L
Subject: Re: [cayugabirds-l] WTS
FYI, white-throated sparrows are not sexually dimorphic -- meaning a normal
human can't tell male from female in the field. But they do have two morphs
-- bright
