| East Sister Island | |
| Location: | Lake Erie |
| Coordinates: | 41.8131°N -82.8564°W |
| Archipelago: | Sister Islands |
| Major Islands: | East Sister Island and West Sister Island |
| Area Km2: | 0.15 |
| Elevation Ft: | 571 |
| Country: | Canada |
| Country Admin Divisions Title: | Province |
| Country Admin Divisions: | Ontario |
| Country Admin Divisions Title 1: | County |
| Country Admin Divisions 1: | Essex |
| Country Admin Divisions Title 2: | Township |
| Country Admin Divisions 2: | Pelee |
| Population: | uninhabited nature reserve |
East Sister Island is a 15 hectare island in Ontario, Canada, located within Lake Erie. It has no long-term human population and is maintained as a Provincial Nature Reserve.[1]
The island is part of the Pelee Archipelago which also includes West Sister Island (in Ohio, USA) and Middle Sister Island.
The island has become the home of a breeding colony of double-crested cormorants. Their droppings have threatened the forest, a relict of Carolinian forest in southern Ontario.[2] The forests of the island are dominated by the common hackberry and Kentucky coffeetree.[3] Unusual species on the island include the wild hyacinth[4] and the Lake Erie water snake, Nerodia sipedon insularum.[5]