Invasive (federal regulations do not apply)
Approximate Hatch Weights:
~2-13g as hatchling
~14-20g as nestling
~27g at adult weight
Order: Passeriformes
Family: Passeridae
Common Name: Old World Sparrows
Region: Broad Range
Chick Type: Altricial
Down: Naked
Skin Color: Pink
Bill: Short and conical
Foot Type: Anisodactyl
Gape: Red-pink
Gape Flanges: Pale yellow
Iris: Dark brown
Legs and Feet: Pink legs and feet
Video from Tufts Wildlife Clinic
Egg
![](https://sites.tufts.edu/babybirds/files/2019/07/fullsizeoutput_40cf.jpeg)
Photo Erin Casper, Alberta Institute for Wildlife Conservation
Egg
![](https://sites.tufts.edu/babybirds/files/2019/07/fullsizeoutput_415a.jpeg)
Photo by Brenda Varvarigos
Just Hatched
![](https://sites.tufts.edu/babybirds/files/2019/06/fullsizeoutput_3b48.jpeg)
Photo by Nikki Becich, Avian Conservation Center of Appalachia
Just Hatched - 2g
![](https://sites.tufts.edu/babybirds/files/2019/07/fullsizeoutput_4155.jpeg)
Photo by Brenda Varvarigos
Just Hatched - 2g
![](https://sites.tufts.edu/babybirds/files/2019/05/fullsizeoutput_37a9.jpeg)
Photo from Tufts Wildlife Clinic, grid squares = 1 inch
Just Hatched - 2g
![](https://sites.tufts.edu/babybirds/files/2019/07/fullsizeoutput_40ca.jpeg)
Photo Erin Casper, Alberta Institute for Wildlife Conservation
Just Hatched - 2g
![](https://sites.tufts.edu/babybirds/files/2019/07/fullsizeoutput_40cc.jpeg)
Photo Erin Casper, Alberta Institute for Wildlife Conservation
~1st Week
![](https://sites.tufts.edu/babybirds/files/2018/03/House-Sparrow-1st-week.jpg)
Photo from Tufts Wildlife Clinic
~1st Week - 13g
![](https://sites.tufts.edu/babybirds/files/2019/05/fullsizeoutput_381f-1.jpeg)
Photo from Tufts Wildlife Clinic, grid squares = 1 inch
~1st Week
![](https://sites.tufts.edu/babybirds/files/2019/03/fullsizeoutput_2e26.jpeg)
Photo by Jen Osburn Eliot, Wildlife Images Rehab Center
~1st Week
![](https://sites.tufts.edu/babybirds/files/2019/03/fullsizeoutput_2e27.jpeg)
Photo by Jen Osburn Eliot, Wildlife Images Rehab Center
~1st Week
![](https://sites.tufts.edu/babybirds/files/2019/03/fullsizeoutput_2e28.jpeg)
Photo by Jen Osburn Eliot, Wildlife Images Rehab Center
~1st Week
![](https://sites.tufts.edu/babybirds/files/2019/05/fullsizeoutput_3727.jpeg)
Photo by Nikki Becich, Avian Conservation Center of Appalachia
~1st Week
![](https://sites.tufts.edu/babybirds/files/2019/05/fullsizeoutput_3724.jpeg)
Photo by Nikki Becich, Avian Conservation Center of Appalachia
~1st Week
![](https://sites.tufts.edu/babybirds/files/2019/05/fullsizeoutput_3729.jpeg)
Photo by Nikki Becich, Avian Conservation Center of Appalachia
~1st Week
![](https://sites.tufts.edu/babybirds/files/2019/05/fullsizeoutput_3737.jpeg)
Photo by Nikki Becich, Avian Conservation Center of Appalachia
~1st Week
![](https://sites.tufts.edu/babybirds/files/2019/05/fullsizeoutput_3731.jpeg)
Photo by Nikki Becich, Avian Conservation Center of Appalachia
~1st Week
![](https://sites.tufts.edu/babybirds/files/2019/02/fullsizeoutput_2b08.jpeg)
Photo by Dane County Humane Society's Wildlife Center
~1st Week - 11g
![](https://sites.tufts.edu/babybirds/files/2022/07/IMG_2832.jpeg)
Photo from the Santa Barbara Wildlife Care Network, ruler in centimeters
~1st Week - 11g
![](https://sites.tufts.edu/babybirds/files/2022/07/IMG_2827.jpeg)
Photo from the Santa Barbara Wildlife Care Network, ruler in centimeters
~1st Week - 11g
![](https://sites.tufts.edu/babybirds/files/2022/07/IMG_2825.jpeg)
Photo from the Santa Barbara Wildlife Care Network, ruler in centimeters
~1st Week
![](https://sites.tufts.edu/babybirds/files/2018/03/House-Sparrow-2nd-week.jpg)
Photo from Tufts Wildlife Clinic
~1st Week
![](https://sites.tufts.edu/babybirds/files/2020/01/fullsizeoutput_4dd1.jpeg)
Photo by Laura Kintz, WildCare Oklahoma
~1st Week - avg 17.5g
![](https://sites.tufts.edu/babybirds/files/2019/07/fullsizeoutput_414d.jpeg)
Photo by Elise Wolf, Native Bird Care
~1st Week - avg 17.5g
![](https://sites.tufts.edu/babybirds/files/2019/07/fullsizeoutput_4150.jpeg)
Photo by Elise Wolf, Native Bird Care
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2019/05/fullsizeoutput_3738.jpeg)
Photo by Nikki Becich, Avian Conservation Center of Appalachia
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2020/07/106279951_705538840289417_6354224987655507045_n.jpeg)
Photo by Nikki Becich, Avian Conservation Center of Appalachia
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2020/07/106006438_1154756531556019_6461220567010873644_n.jpeg)
Photo by Nikki Becich, Avian Conservation Center of Appalachia
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2020/07/107103280_351347539180830_5799953384691763383_n.jpeg)
Photo by Nikki Becich, Avian Conservation Center of Appalachia
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2019/05/fullsizeoutput_373e.jpeg)
Photo by Nikki Becich, Avian Conservation Center of Appalachia
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2020/02/fullsizeoutput_5024.jpeg)
Photo by Jessie Zamichow, Santa Barbara Wildlife Care Network
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2020/02/fullsizeoutput_5025.jpeg)
Photo by Jessie Zamichow, Santa Barbara Wildlife Care Network
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2018/03/House-Sparrow-2nd-week-2.jpg)
Photo from Tufts Wildlife Clinic
~2nd Week - 20g
![](https://sites.tufts.edu/babybirds/files/2023/05/IMG_4450.jpg)
Photo from Tufts Wildlife Clinic, grid squares = 1 inch
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2019/03/HOSP.jpg)
Photo by Jen Osburn Eliot, Wildlife Images Rehab Center
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2019/03/fullsizeoutput_2e25.jpeg)
Photo by Jen Osburn Eliot, Wildlife Images Rehab Center
~3rd Week
![](https://sites.tufts.edu/babybirds/files/2018/03/House-Sparrow-3rd-week.jpg)
Photo from Tufts Wildlife Clinic
~3rd Week
![](https://sites.tufts.edu/babybirds/files/2020/01/fullsizeoutput_4dcd.jpeg)
Photo by Laura Kintz, WildCare Oklahoma
~3rd Week
![](https://sites.tufts.edu/babybirds/files/2020/01/fullsizeoutput_4dcf.jpeg)
Photo by Laura Kintz, WildCare Oklahoma