I checked the O'Care plan.
Take one of these, .22 LR, and check back in the morning.
This whole thing is so stupid, when owning a female dog that goes into heat lock the girl down if you do not intend to breed puppy's.
Same as a teenage girl who gets a period, the males will be swarming about the house and climbing on the roof to get to her. The young males may not know why they are there but something is calling them I would guess the call of the wild.
Fact of nature, to turn a female in heat into a dog run can ---what do you expect ?
One cannot blame a male dog from following its instincts but the owner of a female dog in heat is responsible for the Female that is putting out all these calls to the males.
May as well take a few females on the rag hiking in bear country.