Coyote Predation.

[Grouse]

This study backs up what many coyote hunters know.

A South Carolina study found that coyote predation accounted for between 46 and 84 percent of all deer mortality in the study area, and somewhere between 47 and 62 percent of all fawns succumbed to coyote predation, most within the first three weeks of life. Researchers also determined that most fawns were killed by different coyotes, meaning this behavior was pervasive rather than a few individuals that had learned to specialize in killing fawns.

While the researchers didn’t go so far as to say coyotes represent a threat for deer across the Southeast, they did note that the statewide deer population in South Carolina has declined approximately 30 percent since the mid 1990s—a period coinciding very nicely with an increase in coyote numbers. Other studies in Georgia and Alabama have shown coyote predation to be a leading cause of fawn mortality, and lower fall fawn-to-doe ratios since the arrival of coyotes.

Too many people have been pushing studies that lean towards excusing the damage coyotes can do to the deer population.

[Grouse]

Research is lacking in the Northeast, but it’s reasonable to assume the impact is worse in areas where deep snows concentrate deer and limit their mobility, and coyotes prey on adult deer more frequently. We also know coyotes practice surplus or opportunity killing, taking down and killing prey not for food but merely because it’s easily available.

All this makes them very unpopular with deer hunters. Behavioral plasticity in their breeding behavior also makes them difficult to eradicate. Removing an alpha male may disrupt pack dynamics for a short while but a nomad will soon be along to take its place. Or a subordinate may take over the role. Furthermore, absence of an alpha male in a formerly well-defended territory could result in several males establishing several families. When coyote numbers are reduced, prey becomes relatively more abundant. This, and less intra-specific aggression results in higher productivity and thus, more coyotes.

https://www.popsci.com/story/animals/eastern-coyote-facts/?fbclid=IwAR2mBZljhOx00j2aosJrYGgr46xHxt-Od96PsBAXQuiJNUsr84bFgBBNm_k

[Four Seasons]

9 hours ago, Grouse said:

Research is lacking in the Northeast, but it’s reasonable to assume the impact is worse in areas where deep snows concentrate deer and limit their mobility, and coyotes prey on adult deer more frequently. We also know coyotes practice surplus or opportunity killing, taking down and killing prey not for food but merely because it’s easily available.

All this makes them very unpopular with deer hunters. Behavioral plasticity in their breeding behavior also makes them difficult to eradicate. Removing an alpha male may disrupt pack dynamics for a short while but a nomad will soon be along to take its place. Or a subordinate may take over the role. Furthermore, absence of an alpha male in a formerly well-defended territory could result in several males establishing several families. When coyote numbers are reduced, prey becomes relatively more abundant. This, and less intra-specific aggression results in higher productivity and thus, more coyotes.

https://www.popsci.com/story/animals/eastern-coyote-facts/?fbclid=IwAR2mBZljhOx00j2aosJrYGgr46xHxt-Od96PsBAXQuiJNUsr84bFgBBNm_k

It does until you declare all out war on the vermin. Everything I have seen starts at the dens and early summer. I hear one can all but wipe out the problem by wiping them out when young by any means needed.