I've been working for about a year on a long term poultry project, which will take another 1-2 years to complete. My F1 group was small and I was able to keep most of them, but now I'm hatching out my F2 group this year- and am hatching many more, in hopes of finding a few with the traits I want- F3 will probably be even worse, and then I should be able to start to streamline. So my question to all of you out there working on special projects- is what do you do with your project surplus? Do you place them, or do you cull? Since my F2 group will be crossing two different breeds, I'm going to end up with quite a few chicks who don't have the characteristics that I want- and will just be (probably odd looking) mutt birds. I've heard a lot of people say that they cull all the ones they don't keep, but I just can't imagine doing that....but I'm curious if there's any kind of standard practice amongst you genetic tinkerers?