If you're visiting soon, I'd recommend bringing a butterfly ID book to see how many different ones you can spot. There's a butterfly bonanza when the sun comes out. Look out for:
holly blue, common blue, peacock, purple hairstreak, comma, gatekeeper, meadow brown, clouded yellow, red admiral, small tortoiseshell, speckled wood and small-, large-, and green-veined whites.
Swallowtails are still being spotted…