That'll be the word I was grasping for then..........or something like it at least.tom mckinney said:I think it's called gynandromorphism???...
Now that's what I call a reply! 10 out of 10.rupicola said:this amazing phenomenon is called Gynandromorph (Halfsider) and is in fact the result of the elimination of one X-chromosome during meisosis, causing an animal with one side of the body genetically male and the other side female. The presence of an Y-chromosome is not necessary for developing a female individual in birds and the Y-chromosome is considered to be non-encoding DNA for no genes have ever been found on it.
Gynandromorphism is not common but found in several different species.
I have seen halfsiders (in captivity) in Zebrafinch (Taeniopygia guttata), Barred Parakeet (Bolborhynchus lineola) and Budgerigar (Melopsittacus undulatus)
I was told breeding with a Halfsider Bugerigar resulted in healthy offspring! (no halfsiders) so these birds amazingly appear to be prolific!
blgp_birder said:what a disgusting-looking bird.
Desertbirder said:Hi, I cant help you there,
but you can find the whole piece on www.birdingisrael.com