10/24/2026
It's that time of year again when you may find Monarch roosting behavior along the dunes in Cape May Point. Last night, a small roost of 50+ monarchs formed on the corner of Cape Ave. and Lincoln Ave., and there is a chance of others forming in the next week.
To prepare, we wanted to reshare some important information about Monarch roosts.
First, why do roosts form? Cooler overnight temperatures in the fall make it difficult for most butterflies to fly. Monarchs need heat from the sun to move their muscles and keep their body temperatures up, as they are ectothermic creatures. Cold environmental conditions mimic the overwintering conditions in Mexico, and monarchs instinctively form close clusters on coniferous trees as a result.
Second, where can you find them? Interestingly, monarchs tend to roost in the same spots year after year in Cape May. While this phenomenon is not fully understood, these spots are likely the perfect roosting habitat. They tend to roost on non-native Japanese black pines that shield the monarchs from the wind while allowing them to be near nectar sources in the dunes. Locations in Cape May Point with high concentrations of coniferous trees to check for monarchs are the dune trail at the Cape May Point State Park and the dunes throughout Cape May Point.
If a monarch roost forms on public property, we will post about its location on Instagram and Facebook as soon as possible. If you are lucky enough to witness this roosting phenomenon, please do not harass or disturb the monarch roosts. Respect them from a distance. Roosting is an essential behavior for resting at night during their long migration. Additionally, never trespass on private property to view monarch roosts or to tag them.
Photo of monarchs roosting at Cape May Point in the fall of 2024 by Jack McDonough