Typically they are quiet because they have hens with them,but the same has been the norm here for the last two seasons ever since we had a realy hard winter for this area. The last two seasons they gobble frequently on the roost but once down you never hear em again. I just have you have had toms come in completely silently only to get busted by them. I cant really explain it other than in our area the coyotes have been breeding like rabbits and I think the birds are onto that and call less for fear of becoming prey. Just a theory.