Approximate Hatch Weights:
~1.5g at hatching
~2.5g by 1 day old
~4g by 2 days old
~4.8g by 3 days old
~7.2g by 4 days old
~8.9g by 5 days old
~10g by 7 days old
~13g by 10 days old
~13.4g by 11 days old
~14.1g by 12 days old
~13.3g by 13 days old
Order: Passeriformes
Family: Tyrannidae
Common Name: Tyrant Flycatchers
Region: Broad Range
Chick Type: Altricial
Down: Sparse gray down
Skin Color: Pink
Bill: Straight and pink to gray
Foot Type: Anisodactyl
Gape: Orange-yellow
Gape Flanges: Yellow
Iris: Dark brown
Legs and Feet: Pink to gray legs and feet
~1st Week - 8g
![](https://sites.tufts.edu/babybirds/files/2020/12/48233941271_637e967f1b_o.jpeg)
Photo from Dane County Humane Society's Wildlife Center
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2020/12/48284914752_8b9605a797_o.jpeg)
Photo from Dane County Humane Society's Wildlife Center
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2020/12/48284811096_bd11902a06_o.jpeg)
Photo from Dane County Humane Society's Wildlife Center
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2020/12/48291859517_98b0acd982_o.jpeg)
Photo from Dane County Humane Society's Wildlife Center
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2020/12/48291758061_155d36209d_o-scaled.jpeg)
Photo from Dane County Humane Society's Wildlife Center
~2nd Week
![](https://sites.tufts.edu/babybirds/files/2020/12/48291757446_9e3c38d6a1_o.jpeg)
Photo from Dane County Humane Society's Wildlife Center