No doubt. Being that far north, this fellow was probably in the rut already.
Deer can be vicious animals. Several years ago my Lab Myrtle was out in the woods near my house and was barking continuously. I stopped what I was doing to go and see what all the commotion was about. I found her in the woods with a fawn. She was playing with it, but the fawn was fearing for it's life. This thing was snapping it's teeth and pawing the ground, all the while screaming for mamma.
Along about that time momma arrived and came after me, chasing me up a tree, while pawing the ground and snapping her teeth together. She even rared back and put her front hooves on the side of the tree trying to get at me. This distracted Myrtle and allowed the fawn to retreat into the woods, followed shortly thereafter by mom.
I've observed and hunted deer all my life and I've never seen a doe be that aggressive. I've also never climbed a tree that fast either......
Amazing story!