> Hi Tim,
> This happened to me many years ago with a pair of whiteface
> cockatiels. 3 eggs...4 babies. 2 of the babies were one half
> the size of the other 2. Both babies were pulled and handfed
> day 1. One baby died after about a week and the other one
> survived and caught up to the normal size siblings. Twins
> are rare and seldom survive but it does happen. Usually
> there is not enough room for the 2 to develop properly. If
> they survive the incubating period the embryo on the bottom
> sometimes cannot get to the air pocket so it dies at hatch.
> I have also had a double yolk Amazon egg in which 1 yolk was
> fertile and the other wasn't. In this case the embryo was on
> the bottom and it survived.
Thanks Glenda,I know its pretty rare, but was a pleasent
surprise non-the-less, parents were very good at keeping all
the babies fed, I was impressed all six hatched, the twins was
a bonus, In had a senegal pair years ago that produced twins
but both died before hatching, now if only I can get twins
with the rosies....