Average weight: male 3.13 g, female 3.24 g. Resident birds
are slightly larger than those that migrate.
Adult male: Metallic bronze-green head and back, iridescent
coppery-red gorget (throat), rufous flanks. Smaller than the
Adult female: Rufous back and sides, white breast, white throat
with some red spots, rounded tail with white outer tips. Larger
than the male. Extremely difficult to differentiate from female
Juveniles: Young of both sexes look like the adult female.
Observed in Arizona, coastal California and Channel Islands,
Georgia, Kansas, Louisiana, Massachusetts (Nantucket), Mississippi, Missouri,
Nevada, Oregon, Pennsylvania, Tennessee, Texas, Virginia, Vancouver Island,
B.C. Some birds migrate between Baja and coastal California,
while others are year-round California residents.
For maps showing population distribution and trends, see
the National Biological Service's North American Breeding
Bird Survey species