Thanks Jim and Melanie, is there anything I am suppose to do now? I have never raised in and I really don't know how to. I think these are the first Monarch cats I have had in my yard that I have noticed anyway. I even let the milkweed that grows wild in my flower beds stay where they are.
Just keep the milkweed planted and they'll do their own thing. They've been doing it for thousands of years and don't really need our help. Except to correct the things we messed up like taking away their milkweed in the first place. But unless you want to raise them indoors, just sit back and enjoy the show. And of course, don't spray any pesticides!