Approximate Hatch Weights:
~1.7g by 1 day old
~16g by 10 days old
~20g by 17 days old
Order: Passeriformes
Family: Hirundinidae
Common Name: Swallows
Region: Western
Chick Type: Altricial
Down: Sparse white down
Skin Color: Pink
Bill: Short and pink to gray
Foot Type: Anisodactyl
Gape: Orange-yellow
Gape Flanges: Cream-colored
Iris: Dark brown
Legs and Feet: Pink to gray legs and feet
Video by Donna Nespoli
~1st Week
![](https://sites.tufts.edu/babybirds/files/2018/08/32932600_2073148636298714_3029623119749840896_n.jpg)
Photo by anonymous contributor
~3rd Week - 14g
![](https://sites.tufts.edu/babybirds/files/2019/08/fullsizeoutput_45d5.jpeg)
Photo by Weina Dai
~3rd Week - 14g
![](https://sites.tufts.edu/babybirds/files/2019/08/fullsizeoutput_45d7.jpeg)
Photo by Weina Dai
~3rd Week - 14g
![](https://sites.tufts.edu/babybirds/files/2019/08/fullsizeoutput_45da.jpeg)
Photo by Weina Dai
~3rd Week
![](https://sites.tufts.edu/babybirds/files/2019/03/fullsizeoutput_2f9f.jpeg)
Photo by Jen Osburn Eliot, Wildlife Images Rehab Center