I have never seen any black buzzards around my area. Particularly in the winter months. I see plenty of turkey buzzards regularly due to the odor coming from our business and trout rendering process.
Generally we don't see any turkey buzzards until late Spring and they are local until late fall. They usually migrate before cold weather sets in.
Yesterday morning I glanded out 2 otter carcass' a friend had in his freezer from last season and a fisher a buddy dropped off. I took them out below our main building to put them in our carcass dump area. I then went back to work, nothing different about this day.
Later that day I went out to the house to print some labels and when walking back to the shop I noticed all these large birds perched in some trees just off our power line right of way.They stuck out against the dark blue sky in the background.
I also noticed a few on the ground near the area I put those carcass'. There appeared to be a large number of birds, maybe 15 or 20.
At first I thought they may be Ravens due to the size and color. However, as I walked closer I still couldn't ID them. I got fairly close to them and could see them well. I thought, where did they come from. I got to see their heads very well and was surprised what I was seeing.
To my surprise the next morning, " this morning" walking over to our facility, I thought I would walk over to check on the carcass area out of curiosity. All signs of the carcass' were gone except for lots of white wash looking droppings all over the ground. Nothing was left, everything was cleaned up.
The combined weight of those carcass' was likely 35 -40 + pounds easy. The birds were gone.
I ran to the local post office mid morning today and on the way I spotted that "same flock" most likely, very near the post office. All perched low above a small local trout stream in the trees. They were so close to the road I was able to pull over and observe them for a few minutes. I got a real good look at them this time.
I didn't notice any dead animals in sight but could have very well been something that I couldnt see. They were probably about 3 miles from where they were at our place. Looks as if they were following the stream and road which run side by side for several miles.