Approximate Hatch Weights:
~1.5-2.4g at hatching
~18.8g by 11 days old
Order: Passeriformes
Family: Passerellidae
Common Name: Old World Sparrows
Region: Broad Range
Chick Type: Altricial
Down: Sparse black down
Skin Color: Pink
Bill: Short and conical
Foot Type: Anisodactyl
Gape: Red
Gape Flanges: Pale yellow
Iris: Dark brown
Legs and Feet: Pink to brown legs and feet
Video by Brenda Varvarigos
Video by Andrea Aiuto
Nest

Photo by Jacqueline Sandberg, Dane County Humane Society's Wildlife Center
Nest

Photo by Andrea Aiuto
Nest

Photo by Michelle Anderson
Eggs

Photo by Michelle Anderson
~1st Week

Photo by Maureen Eiger, Help Wild Birds
~1st Week

Photo by Maureen Eiger, Help Wild Birds
~1st Week - 8g

Photo by Michelle Anderson
~1st Week - 8g

Photo by Michelle Anderson
~1st Week

Photo by Maureen Eiger, Help Wild Birds
~1st Week

Photo by Andrea Aiuto
~1st Week

Photo by Andrea Aiuto
~1st Week

Photo by Andrea Aiuto
~1st Week

Photo by Michelle Anderson
~1st Week

Photo by Michelle Anderson
~1st Week - 12g

Photo by Michelle Anderson
~1st Week - 12g

Photo by Michelle Anderson
~1st Week - 12g

Photo by Michelle Anderson
~1st Week - 12g

Photo by Michelle Anderson
~1st Week - 13g

Photo by Andrea Aiuto
~1st Week - 13g

Photo by Andrea Aiuto
~1st Week

Photo by Andrea Aiuto
~1st Week

Photo by Andrea Aiuto
~1st Week

Photo by Andrea Aiuto
~1st Week - avg 11g

Photo by Jacqueline Sandberg, Dane County Humane Society's Wildlife Center
~1st Week - avg 11g

Photo from Dane County Humane Society's Wildlife Center
~2nd Week

Photo by Maureen Eiger, Help Wild Birds
~2nd Week

Photo by Maureen Eiger, Help Wild Birds
~2nd Week

Photo by Maureen Eiger, Help Wild Birds
~2nd Week

Photo by Maureen Eiger, Help Wild Birds
~2nd Week

Photo by Maureen Eiger, Help Wild Birds
~2nd Week

Photo by Maureen Eiger, Help Wild Birds
~2nd Week

Photo by Maureen Eiger, Help Wild Birds
~2nd Week

Photo by Jacqueline Sandberg, Dane County Humane Society's Wildlife Center
~2nd Week

Photo by Jacqueline Sandberg, Dane County Humane Society's Wildlife Center
~2nd Week

Photo from Dane County Humane Society's Wildlife Center
~2nd Week

Photo from Dane County Humane Society's Wildlife Center
~3rd Week

Photo from Dane County Humane Society's Wildlife Center
~3rd Week

Photo by Nikki Becich, Avian Conservation Center of Appalachia
~3rd Week

Photo by Nikki Becich, Avian Conservation Center of Appalachia
~3rd Week

Photo by Maureen Eiger, Help Wild Birds
~3rd Week

Photo by Maureen Eiger, Help Wild Birds
~3rd Week

Photo by Maureen Eiger, Help Wild Birds
~3rd Week

Photo by Maureen Eiger, Help Wild Birds
~3rd Week

Photo by Maureen Eiger, Help Wild Birds
~3rd Week

Photo by Maureen Eiger, Help Wild Birds
~3rd Week

Photo by Maureen Eiger, Help Wild Birds
~3rd Week

Photo by Maureen Eiger, Help Wild Birds
>3 Weeks

Photo by Maureen Eiger, Help Wild Birds
>3 Weeks

Photo by Jamie Chavez
>3 Weeks

Photo by Mark Holmgren