Approximate Hatch Weights:
~3g at hatching
~22.5g by 8 days old
Order: Passeriformes
Family: Passerellidae
Common Name: New World Sparrows
Region: Eastern
Chick Type: Altricial
Down: Sparse gray down
Skin Color: Pink
Bill: Short and conical
Foot Type: Anisodactyl
Gape: Pink
Gape Flanges: Pale yellow
Iris: Dark brown
Legs and Feet: Pink to gray legs and feet
~1st Week
![](https://sites.tufts.edu/babybirds/files/2018/07/36806984_10214345449862848_4078911401421176832_o.jpg)
Photo by LouAnn Partington
~1st Week
![](https://sites.tufts.edu/babybirds/files/2018/07/36821272_10214345448822822_8013055862069264384_o.jpg)
Photo by LouAnn Partington
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2018/07/36789945_10214345450902874_6789278177446330368_o.jpg)
Photo by LouAnn Partington
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2023/09/379574611_2122648464749643_6178209937441754714_n.jpg)
Photo by Errolyn Martin
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2023/09/378062825_876029864277075_5341521958557980073_n.jpg)
Photo by Errolyn Martin
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2023/09/379365021_1272154570130687_4649687842912480348_n.jpg)
Photo by Errolyn Martin
~2nd Week - 33g
![](https://sites.tufts.edu/babybirds/files/2023/10/379113519_10222990467976488_2837396414502452832_n.jpg)
Photo by Sheida Soleimani
~2nd Week - 33g
![](https://sites.tufts.edu/babybirds/files/2023/10/379015979_10222990468216494_6678359635706071122_n.jpg)
Photo by Sheida Soleimani
~2nd Week - 33g
![](https://sites.tufts.edu/babybirds/files/2023/10/379124592_10222990468136492_7469018161316447351_n.jpg)
Photo by Sheida Soleimani
~2nd Week - 33g
![](https://sites.tufts.edu/babybirds/files/2023/10/379176385_10222990468056490_2637272065104958044_n.jpg)
Photo by Sheida Soleimani
~3rd Week
![](https://sites.tufts.edu/babybirds/files/2023/09/379342397_2584013498428114_6283857100585066476_n.jpg)
Photo by Errolyn Martin
~3rd Week
![](https://sites.tufts.edu/babybirds/files/2023/09/379400235_854942462529291_6062047951209371587_n-scaled.jpg)
Photo by Errolyn Martin
~3rd Week
![](https://sites.tufts.edu/babybirds/files/2023/10/382235179_10223025481371801_105138681512194668_n.jpg)
Photo by Sheida Soleimani
~4th Week
![](https://sites.tufts.edu/babybirds/files/2023/09/379413587_1345532702986083_6822322193064276332_n.jpg)
Photo by Errolyn Martin
~4th Week
![](https://sites.tufts.edu/babybirds/files/2023/09/379603076_312998384714465_6975429101915540997_n.jpg)
Photo by Errolyn Martin
~4th Week
![](https://sites.tufts.edu/babybirds/files/2023/10/384542561_669537298479591_3234663236987055910_n-scaled.jpg)
Photo by Sheida Soleimani
~4th Week
![](https://sites.tufts.edu/babybirds/files/2023/10/382244420_1431496667410992_5313800592570230275_n.jpg)
Photo by Sheida Soleimani