, red-winged blackbirds, common yellowthroats (Geothlypis trichas), and bobolinks (Dolichonyx oryzivorus) were more abundant (all P < 0.
House sparrows were only mildly infectious to naive house finches for a short time, whereas American goldfinches
remained infectious for up to 49 days after inoculation, although by then there were no physical signs of disease.
House finches and American goldfinches
flock to a feeder in Eugene.
Among the topics of discussion are which weather conditions lend to fall foliage, how wolf spiders catch prey, and why American goldfinches
build nests out of the usual spring season.
We set out along Upper Haskell Creek - a restored riparian area - where we saw our first birds: American goldfinches
Birds like American goldfinches
, grosbeaks and juncos feed on seed of the following wildflowers and grasses:
A pair of acrobatic American goldfinches
alight on a cylindrical hanging bird feeder, hungrily searching for thistle seeds.
Hardest hit were pine siskins, American goldfinches
and common redpolls.
It's time for these American goldfinches
to get busy.
CUTLINE: A pair of American goldfinches
keep a lookout from a feeder at the Mass.
For American goldfinches
, the best detection model incorporated a year effect with no adjustments to the uniform function in 2001 data, and one adjustment in 2002 data.