Acadian Flycatcher (Empidonax virescens)
Status in Canada: Endangered
Status in Ontario: Endangered
Status at SWCR: Rare breeding bird
The Acadian Flycatcher is a small migratory songbird. In Canada, it breeds mostly in the Carolinian Forest Zone in southwestern Ontario.
- It is a rare breeding bird in Canada but has nested at both the Nursery Tract and the Turkey Point Tract.
- Acadian Flycatcher requires large areas of undisturbed forest with a closed canopy and open understory.
- Their delicate cup nests are constructed in the fork of horizontal branches.
Threats at the St. Williams Conservation Reserve:
Habitat loss and Degradation: Acadian Flycatchers are sensitive to alterations in their environment, particularly changes in the canopy closure of the forest.
Activities that can damage Acadian Flycatcher habitat include:
- Tree removal that eliminates the closed canopy conditions needed by this species.
- Activities that can introduce or encourage the growth of invasive plants, such as dumping of garden waste and off-trail ATV use.
- Activities that change the water regime in the woodlands.
Beneficial management activities at St. Williams Conservation Reserve:
- Population monitoring
- Invasive plant control
- Enforcement of unauthorized trail use
What you can do to help the Acadian Flycatcher:
- Follow the code of conduct for recreational activities in the Conservation Reserve and know and respect the current trail-use regulations.
- Clean your boots, bicycle tires, or ATV before and after visiting the SWCR or other natural areas to avoid spreading invasive plant seeds.
- Report sightings to the SWCR CC, Bird Studies Canada (1-888-448-2473), or the Natural Heritage Information Centre.
- Report unauthorized trail use or any illegal activity related to plants and wildlife to 1-877-TIPS-MNR (847-7667).
Species At Risk Public Registry Profile
Ontario Species at Risk Profile