Again I say, there are several of those studies on the web. Look them up like I did. And I agree about using harvest data as the main indicator of deer populations.Again I ask: Do you have those studies in PDF form? I am not questioning you, just really curious to read the science... (as if I don't have enough to read already).
I do know that among canids black is a dominant and penetrant gene so crossed with another canid (dog or wolf) that carried that gene ought to result in black hybrids.
Regarding the main study (most issues dealt with in the reply paper), the use of harvest data seems inane, especially if, as I've seen on this forum someone suggest that the average actual reporting is somewhere around 65-75%. I'm no expert, but that's a ton of error variance. Isn't there a UGA study of NoGA deer/fawn recruitment study showing mortality associated with coyote predation?