Yes, I still have White-throated Sparrows at my Raleigh birdfeeders as
of April 7, and they are vocalizing much more than they did throughout
the winter. Please send in good-quality recordings of White-throated
Sparrows to ebird/macaulay, for their song appears to be changing over
time.
White-throated Sparrows have, in effect, 'four genders':
"Whether male or female, tan-striped birds almost always choose
white-striped mates, and vice versa. Each bird, therefore, chooses a
mate from only 25 percent of the population; if you are a tan-striped
female looking to make some babies, a male of the same morph just
won’t do. You want a male with white stripes on his head."
Another part of the article states "Birds with the supergene
version—that is, the white-striped birds—defend their breeding
territories more vigorously on average than do their tan-striped
counterparts, who spend more of their time bringing food to offspring
in the nest."
The article link is (
https://urldefense.com/v3/__https://www.scientificamerican.com/article/a-backyard-bird-offers-a-new-way-of-thinking-about-sexes/__;!!OToaGQ!oAZHg6u8j9FmNP1Viy-KS8YsiyBCYauVQJScRIJCtfgYou-q1hl2jGpu82PQNvFmlaOG7haOm2Iuw-b_fhNM4g$ )
Fascinating birds!
