Thank you for the many suggestions about handling the chicks that
hatched 1 1/2 days apart. With the heat we are having this year I expect
to see more first eggs hatching 18 days after being laid, rather than 18
days after the second egg was laid. Am I correct that incubation starts
when the temperature is above 96 degrees Fahrenheit?
Today the first squab is 24 days old, healthy and full size. The sib is
22 1/2 days old, healthy but only half normal size and with a shortened
tail. However, the younger squab flies better than the older sib.
What I did, 20 days ago, was to remove the bigger chick from the nest
box from 6 AM to 9 AM and then from 4 PM to 6PM on two consecutive days.
These were major feeding times. Although the younger, smaller chick
never was more than 2/3 the size of the older one, it apparently got
enough extra food when it was by itself so that it could hold its own at
all other times. There was never any problem of the parents rejecting
the chick I handled, and it seemed quite content in a terry towel lined
box I kept warm and in the dark.
I generally candle eggs three days after the hen starts full time
incubation. You should be able to see the blood spot then (look in the
Levy book for pictures). If I don't see signs of embryo development by
the tenth day of incubation I remove the egg from the nest. I once had a
dead egg literally explode in the nest in very hot weather, and the
stench of the hydrogen sulfide lingered for days.
Some times chicks die in the shell because the shell dried out and the
chick can't pip it. If candling has shown me that there was normal
embryonic development I will do a "C-section" on the shell. I keep an
old normally pipped shell as my reference to where to make the incision
around the shell. I only score the shell down to the membrane, never
through it. I then let the chick work its way out. This has been
successful three times.
Obviously these birds are just pets. There is no reason to go to these
efforts for a show bird that you know you will have to cull.
erosbooks
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