The only thing I see is very large and not a butterfly egg. They are very small and usually under the leaf

Monarch eggs are almost always on the underside of the leaves, unless they are laying them on the blossoms themselves. You definitely have lots of activity, based on the number of holes eaten in the leaves.

Martha

Hmmm. I've seen several eggs that I though were monarch on tops of the leaves. I've had several cats too. Guess these eggs have been something else. You're right that there is lots of activity.

They do look like Monarch eggs to me. Can you get a close up? Maybe a female who dumps a bunch of eggs? Lucky you with all that activity, I am jealous!

Several years back I had a female "egg dump" about 150 eggs on my tropical milkweed. She had lost one of the forewings (probably a bird) and didn't fly very well, so when she found my garden I think she decided that this was a choice place to lay a bunch of eggs because she wasn't going to fly much farther in life. Anyway, she laid so many that some leaves had 3 or 4 eggs and she did lay eggs on top of the leaves also.

A very interesting photo.