Monarch egg #1 hatched!

The Monarch egg found on 7/25 on the tropical milkweed hatched early in the afternoon. At first its body was white and its head was black, but within an hour or so its body had turned a grey/green color. A Black Swallowtail, whose lower left wing was nearly missing, laid eggs (around 10) in my garden, mostly on fennel, one on dill. Later in the day a second Black Swallowtail, one with perfect wings, also came and laid some eggs. Lost count of how many at that point.