I am beginning to experience first hand the problems with producing araucanas. In my first batch of eggs -- which was really too old before I started incubation -- only 1 out of about 20 eggs developed. That 1 stopped about half way through development. I'm blaming the lethal tufted gene. In my second batch, I had 19 araucana eggs and 9 cochins. Again, only 1 araucana egg has developed. 6 cochin eggs are developing. These 7 eggs just went to the hatcher yesterday. With araucanas, of course, I'm battling at least a coupla known problems: the lethal tufted gene, and infertility due to the taillessness. In my specific case, I know that I am also suffering from a low roo/hen ratio -- I've got 11 bantam hens in the pen with only one roo. I can change the ratio when I get another pen finished. What else can I do? My conditions are: incubator humidity 45-50%, hatcher humidity 60-65%, temp in both 100 (both are forced air). Any input welcomed!