Came across this article in the internet, though this is mainly intended for squab farming, some good information is present here related to squab rearing.
Egypt. Poult. Sci. Vol (36) (I): (205-232) (2016)
I thought I would share a few pictures I took tonight of my girlfriend hand feeding a baby pigeon.
This pigeon is called Ulyt, short for Ugly Little Yellow Thing.
She has been handfeeding it since it was about 4 or 5 days old.
She grinds up feed in a coffee mill, adds some water and microwaves...