You have no choice when living in the country. If I didn't eliminate strays on a regular basis we would be over-run in no time.
People dump animals off all the time.An gray kitten showed up here about 3 months ago,can't get rid of it ,looks like we'll have to move.Had about 9 cats running around here at one time then an F1 traveled over the house and we were down to around four.Hate to shoot them but you can't feed them all.