I read a bit about leucism causes and effects. Seems there is conflicting evidence about whether this is genetic or not. White patches can be caused by genetic mutations in the root cells of the feathers, or by environmental damage -- like predator claws! Some studies of mate choice in juncos indicate that the girls like the flashy white tails on the guys, but the guys do not care if girls have white. So this may or may not be genetic, and may or may not affect breeding (or survival) success. So I guess I just have to wait until next year, to see if I have a new crop of piebald juncos. That would be fun!
On Thursday, January 14, 2021 at 9:22:46 AM UTC-7, Ghislaine Griswold wrote: > > Crappy photo through living room window and screen, sorry. This guy/gal > has been visiting irregularly for a couple months. Douglas County, 6000ft > elevation, just south of Sedalia on highway 105. I just saw another one > with different white spots, so there are more than one! Do they pass on > this trait, so we will be seeing all kinds of spotted juncos next year? > Thanks, > Ghislaine Griswold > -- 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/1466df4f-0925-4d60-8e9e-8faa09fd0e35o%40googlegroups.com.
