Day 6: Early morning
The robins continue to develop and grow. It is remarkable to observe the rate at which they change.
Day 5, Morning
Day 5: Eye slits getting bigger, heads darkening.
Day 5: Feed me!
Day 6: Feathers developing
Day 6: Eye slits widening
Day 6: Lunchtime
Day 6: notice the eye slit starting to open! Gotta love the tufts of fluff on the top of the head.