More Monarch eggs! On common milkweed, in a couple of different spots in Green-Wood and Bush Terminal Park.
I’ve yet to spot a caterpillar, but this poop is suggestive.
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This work by Matthew Wills is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.
Backyard and Beyond 
Can’t say I’ve ever seen caterpillar poop before!
A fully-grown Monarch caterpillar makes a lot..
What camera/lens do you use for your close-ups?
Sony RX10IV, fixed lens. The macro feature is electronic, not a separate lens, and tricky: nobody sees the multiple failed shots I took to get these!