Path: utzoo!mnetor!uunet!husc6!rutgers!sri-spam!ames!ucbcad!ucbvax!decwrl!larrabee From: larrabee@decwrl.dec.com (Tracy Larrabee) Newsgroups: rec.birds Subject: Re: On vivigen and sex Message-ID: <180@bacchus.DEC.COM> Date: 14 Dec 87 05:07:13 GMT References: <9093@utzoo.UUCP> Reply-To: larrabee@decwrl.UUCP (Tracy Larrabee) Organization: DEC Western Research Lab, Palo Alto, CA Lines: 16 In article <9093@utzoo.UUCP> rising@utzoo.UUCP (Jim Rising) writes: >Is it possible that the people at vivigen did not realize that in birds >it is the females that are the heterogamic sex, i.e. WZ? No, they have correctly identified female and male birds of other species before (there have been several articles in veternary journals as well as those in popular aviculture publications). Their identification of my pair of Pionus matches the findings of surgical sexing. The only thing that along those lines that would explain this would be if Hyacinth macaws *males* were the heterogamic ones. (I know, I know, this is unlikely.) I would love to get to the bottom of this. No bird will die from genetic sexing, and statistically, 1 out of 20 will die from surgical sexing.