- 3.5–4.3 in
- 0.2–0.3 oz
- Auripare verdin (French)
- Baloncillo, Párido del desierto (Spanish)
- The Verdin builds nests for both breeding and roosting; roosting nests are much smaller. The outer stick shell is constructed mostly by the male, while the female does most of the lining.
- The Verdin's roosting nests help it stay warm in winter. Winter roosting nests have thicker insulation, and may reduce energy requirements for thermoregulation by as much as 50 percent.
- The Verdin builds roosting nests all year round. One pair of Verdins in Arizona was observed building 11 nests in one year.
- During the heat of the desert summer, the Verdin rests quietly in the shaded interior of a shrub, sometimes panting or spreading its wings. Nests built in summer open toward prevailing winds, perhaps to aid in cooling.
- The oldest recorded Verdin was at least 5 years, 7 months old when it was recaptured and rereleased during banding operations.
Desert scrub, especially along washes where thorny vegetation is present.
Insects and spiders.
- Clutch Size
- 3–6 eggs
- Egg Description
- Light greenish, with irregular dark reddish spots, especially at larger end.
- Condition at Hatching
- Helpless and naked.
Large sphere with a hole usually located near the bottom. Outer shell of sticks, lined with leaves and smaller twigs. Placed in shrub.
Moves actively and nimbly among limbs of scrub vegetation, in a manner resembling that of chickadees. Often holds blossoms with feet while looking and picking at prey with bill.
Verdin populations declined by over 2% per year between 1966 and 2014, resulting in a cumulative decline of 65%, according to the North American Breeding Bird Survey. Partners in Flight estimates a global breeding population of 8 million with 58% occurring in Mexico, and 42% in the U.S. The species rates an 11 out of 20 on the Partners in Flight Continental Concern Score. Verdin is a U.S.-Canada Stewardship species, and the 2014 State of the Birds Report listed it as a Common Bird in Steep Decline. Land development in southern California has reduced Verdin habitat, and has resulted in the possible extirpation of the species from San Diego County, California.