Date: 10/8/25 6:33 pm From: DAVID A LEATHERMAN <daleatherman...> Subject: [cobirds] Magnolia Warbler food item
I checked an eBird checklist by JoAnne Potter Riggle today that showed a Magnolia Warbler at Gypsum Ponds in Eagle, CO. Interestingly several of her 20 images attached to the checklist show the bird with a captured green and white patterned caterpillar. I am pretty sure this caterpillar is that of a Juniper Hairstreak butterfly (Callophrys gryneus). Very cool. I hope Joann checks COBIRDS. I do not have her email.
Below are images of a Juniper Hairstreak caterpillar by Pat Ciesla of Fort Collins via the BugWood photo archive, and the butterfly, one of our loveliest IMO, taken by me near Stoneham in Weld County.
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