Multiple different subspecies in different regions that vary widely in appearance.
Approximate Hatch Weights:
~2g at hatching
~7.4g by 3 days old
~14.1g by 6 days old
~17.3g by 11 days old
Order: Passeriformes
Family: Passerellidae
Common Name: New World Sparrows
Region: Broad Range
Chick Type: Altricial
Down: Sparse gray down
Skin Color: Pink
Bill: Short and conical
Foot Type: Anisodactyl
Gape: Red-pink
Gape Flanges: Yellow
Iris: Dark brown
Legs and Feet: Pink to brown legs and feet
Video by Cheri Fromm
Video by Ciera Duits-Cavanaugh
Video by Cheri Fromm
Video by Cheri Fromm
Eggs
Photo by Ian Jackson
~1st Week - 6.5g (Red-backed)
Photo by Cheri Fromm
~1st Week - 6.5g (Red-backed)
Photo by Cheri Fromm
~1st Week - 6.5g (Red-backed)
Photo by Cheri Fromm
~1st Week - 6.5g (Red-backed)
Photo by Cheri Fromm
~1st Week - 6.5g (Red-backed)
Photo by Cheri Fromm
~1st Week - 9g (Red-backed)
Photo by Cheri Fromm
~1st Week - 9g (Red-backed)
Photo by Cheri Fromm
~1st Week - 9g (Red-backed)
Photo by Cheri Fromm
~1st Week - 9g (Red-backed)
Photo by Cheri Fromm
~1st Week - 9g (Red-backed)
Photo by Cheri Fromm
~1st Week (Oregon)
Photo by Ashley Damm
~1st Week (Oregon)
Photo by Ashley Damm
~1st Week (Oregon)
Photo by Ashley Damm
~1st Week - 10g (Red-backed)
Photo by Cheri Fromm
~1st Week - 10g (Red-backed)
Photo by Cheri Fromm
~1st Week - 10g (Red-backed)
Photo by Cheri Fromm
~1st Week - 10g (Red-backed)
Photo by Cheri Fromm
~1st Week - 10g (Red-backed)
Photo by Cheri Fromm
~1st Week - 10g (Red-backed)
Photo by Cheri Fromm
~1st Week - 11g (Red-backed)
Photo by Cheri Fromm
~1st Week - 11g (Red-backed)
Photo by Cheri Fromm
~1st Week (Red-backed)
Photo by Cheri Fromm
~1st Week (Red-backed)
Photo by Cheri Fromm
~1st Week (Red-backed)
Photo by Cheri Fromm
~1st Week (Red-backed)
Photo by Cheri Fromm
~1st Week (Red-backed)
Photo by Cheri Fromm
~1st Week (Red-backed)
Photo by Cheri Fromm
~1st Week (Red-backed)
Photo by Cheri Fromm
~2nd Week - 14.5g (Red-backed)
Photo by Cheri Fromm
~2nd Week - avg 14.5g (Red-backed)
Photo by Cheri Fromm
~2nd Week - avg 14.5g (Red-backed)
Photo by Cheri Fromm
~2nd Week - avg 14.5g (Red-backed)
Photo by Cheri Fromm
~2nd Week - avg 15.5g (Red-backed)
Photo by Cheri Fromm
~2nd Week - avg 15.5g (Red-backed)
Photo by Cheri Fromm
~2nd Week (Red-backed)
Photo by Cheri Fromm
~2nd Week - avg 15.5g (Red-backed)
Photo by Cheri Fromm
~2nd Week - avg 15.5g (Red-backed)
Photo by Cheri Fromm
~2nd Week (Oregon)
Photo by Ashley Damm
~2nd Week (Oregon)
Photo by Marina Dimitrov
~2nd Week - 15.5g (Red-backed)
Photo by Cheri Fromm
~2nd Week - 15.5g (Red-backed)
Photo by Cheri Fromm
~2nd Week (Red-backed)
Photo by Cheri Fromm
~2nd Week (Red-backed)
Photo by Cheri Fromm
~2nd Week (Red-backed)
Photo by Cheri Fromm
~2nd Week (Red-backed)
Photo by Cheri Fromm
~2nd Week (Oregon)
Photo by Jessie Zamichow, Santa Barbara Wildlife Care Network
~2nd Week (Red-backed)
Photo by Cheri Fromm
~2nd Week (Red-backed)
Photo by Cheri Fromm
~2nd Week (Red-backed)
Photo by Cheri Fromm
~2nd Week (Red-backed)
Photo by Cheri Fromm
~2nd Week (Red-backed)
Photo by Cheri Fromm
~2nd Week (Red-backed)
Photo by Cheri Fromm
~2nd Week (Red-backed)
Photo by Cheri Fromm
~2nd Week - 18g (Red-backed)
Photo by Cheri Fromm
~2nd Week - 18g (Red-backed)
Photo by Cheri Fromm
~2nd Week - 18g (Red-backed)
Photo by Cheri Fromm
~3rd Week (Oregon)
Photo by Mirra Tubiola, Santa Barbara Wildlife Care Network
~3rd Week (Oregon)
Photo by Mirra Tubiola, Santa Barbara Wildlife Care Network
~3rd Week (Oregon)
Photo by Mirra Tubiola, Santa Barbara Wildlife Care Network
~3rd Week (Red-backed)
Photo by Cheri Fromm
~3rd Week (Red-backed)
Photo by Cheri Fromm
~3rd Week (Red-backed)
Photo by Cheri Fromm
~3rd Week (Red-backed)
Photo by Cheri Fromm
~3rd Week (Oregon)
Photo by Jessie Zamichow, Santa Barbara Wildlife Care Network
~3rd Week (Oregon)
Photo by Jessie Zamichow, Santa Barbara Wildlife Care Network
~3rd Week (Red-backed)
Photo by Cheri Fromm
~3rd Week (Red-backed)
Photo by Cheri Fromm
~3rd Week (Red-backed)
Photo by Cheri Fromm
~3rd Week (Red-backed)
Photo by Cheri Fromm
~3rd Week (Red-backed)
Photo by Cheri Fromm
~3rd Week (Red-backed)
Photo by Cheri Fromm
~3rd Week - 17g (Red-backed)
Photo by Cheri Fromm
~3rd Week - 17g (Red-backed)
Photo by Cheri Fromm
~3rd Week - 17g (Red-backed)
Photo by Cheri Fromm
~3rd Week - 17g (Red-backed)
Photo by Cheri Fromm
~4th Week (Red-backed)
Photo by Cheri Fromm
~4th Week (Red-backed)
Photo by Cheri Fromm
~4th Week (Red-backed)
Photo by Cheri Fromm
~4th Week (Red-backed)
Photo by Cheri Fromm
~4th Week (Red-backed)
Photo by Cheri Fromm
~4th Week (Red-backed)
Photo by Cheri Fromm
>4 Weeks (Red-backed)
Photo by Cheri Fromm
>4 Weeks (Red-backed)
Photo by Cheri Fromm
>4 Weeks (Red-backed)
Photo by Cheri Fromm
>4 Weeks (Red-backed)
Photo by Cheri Fromm
>4 Weeks (Red-backed)
Photo by Cheri Fromm
>4 Weeks (Red-backed)
Photo by Cheri Fromm
>4 Weeks (Red-backed)
Photo by Cheri Fromm
>4 Weeks (Red-backed)
Photo by Cheri Fromm
>4 Weeks (Red-backed)
Photo by Cheri Fromm
>4 Weeks (Oregon)
Photo by Aaron Budgor