Mourning Cloak

Nymphalis antiopa · Also known as: Camberwell beauty, mourning cloak butterfly

A velvety dark butterfly with cream wing borders. One of the few that can overwinter as an adult and surprise hikers on warm Assateague winter days.

Mourning Cloak (Nymphalis antiopa) — Ocean City, Maryland
Photo via Wikipedia / Wikimedia Commons — Nymphalis antiopa

Quick facts

GroupButterfly
Likelihood nearby★★★☆☆
Habitats Maritime forest, Mainland near OC, Assateague State Park, Assateague National Seashore
Seasons (this coast)spring, fall, winter

How to recognize them

  • Large maroon-brown wings with a bright yellow border and blue spots near the margin.
  • Camouflaged underside looks like bark; wings sound like rustling leaves when startled from a tree trunk.

Biology notes

  • Adults hibernate in tree cavities and bark crevices; emerge on sunny late-winter and early-spring days.
  • Caterpillars feed on willows, elms, and hackberries in mainland and park woodlots.

Where to see them around Ocean City

  • Assateague maritime forest trails and campground shade trees.
  • Mainland Ocean City neighborhoods with mature willows and elms.
  • Sunny forest edges along bay-side roads west of the barrier island.

When to look

  • March–April and October–November most visible; occasional warm-day flights in winter.

Viewing tips & etiquette

  • Scan tree trunks at eye level—hibernating adults blend in until they sun themselves.

Sources & further reading