Approximate Hatch Weights:
Order: Passeriformes
Family: Vireonidae
Common Name: Vireos
Region: Western
Chick Type: Altricial
Down: Sparse gray down
Skin Color:
Bill: Straight and pink to black
Foot Type: Anisodactyl
Gape: Yellow
Gape Flanges: Pale yellow
Iris: Dark brown
Legs and Feet: Pink to gray legs and feet
~2nd Week - 9g
![](https://sites.tufts.edu/babybirds/files/2019/07/fullsizeoutput_4348.jpeg)
Photo by Kelley Ward
~2nd Week - 9g
![](https://sites.tufts.edu/babybirds/files/2019/07/fullsizeoutput_434a.jpeg)
Photo by Kelley Ward
~2nd Week - 9g
![](https://sites.tufts.edu/babybirds/files/2019/07/fullsizeoutput_434c.jpeg)
Photo by Kelley Ward
>4 Weeks - 16g
![](https://sites.tufts.edu/babybirds/files/2019/07/fullsizeoutput_434e.jpeg)
Photo by Kelley Ward