HaLeiVi -“There are two Segulos from the Medrash thaat comes to mind. Shluach Hakein”
I’m pretty sure this Segulah works. I had the opportunity to do this Mitzva because one of those Kosher birds had eggs in my tree, but I knew s/o who didn’t have kids and wanted him to do it.
But my neighbor wanted to do it since he saw I wasn’t doing it, but I told him I don’t give him permission because I want a childless man to get it. He said he didn’t care and he was going to do it anyway if the guy didn’t come soon. B’H the guy came soon and did it. Not long after they had a kid (a girl I think).
I don’t even know if they had any more kids!