Actually had a bull calf sexually mutilated back in 1976. It was very weird then as it still is today... not a mark on him except for where his pecker used to be...
As for picking them up then dropping them from aircraft that is a new one to me...
There have been some calculations . . . e.g. in a field with new snow on top of significant muddiness . . . that at least in one case, the cow had to have been dropped from at least 300 feet.
There have been some very clever explanations as to how human black ops folks have used silent copters to do such things for the 50% of the mutilations they are supposedly engaging in . . . though certainly we have UFO type craft, too. I don’t remember all the details but it was plausible. Something about the workers using a particular kind of dart or beam or some such to take the cow down initially, then standing on top of the cow to do the work etc. and still leaving no hint of any tracks to the cow.
However, clearly a huge chunk of such mutilations have been carried out by ‘others.’
Farmers have
1. SEEN the critters and their craft just before and after.
2. In some cases they have seen them working with the cows in the midst of the process.
3. Some have seen the cows being ‘beamed’ up into the craft.
4. Some farmers have shot at the critters which came up around the farmhouse and peered in the windows at the same time as the mutilations incidents were occurring on their property.
Actually, over the years, I’d guess that 8-12 or more FREEPERS have confided either privately or openly that they have had such mutilations on their property.