On a boat, Reuven owns five ostriches and one of them eats a diamond off of Shimon's hat which is on his head. Though we are not sure which one ate it we know with certainty that one of them did. Assume that we would have to kill them one by one in order to find the right one.
Do ethics regarding animal rights play a role here? Also, does Shimon have any part ownership in the ostrich to the extent that Reuven cannot sell it until the matter is clarified? Is killing a possibility in order to retrieve the diamond?
What is the straight halacha and the hashkafic view of animal rights in this situation?