Bird of the Week, September 2, 2011
Olive-sided Flycatcher

Olive-sided Flycatcher by Peter LaTourrette


This large flycatcher gives a lively, whistled call that sounds like: “Quick, three beers!”  It has the longest migration of any North American flycatcher; birds nesting in Alaska may winter as far south as Bolivia.


The Olive-sided Flycatcher responds favorably to managed logging and fires that leave sufficient snags and residual trees to provide foraging and singing perches. This species feeds almost entirely on flying insects, especially bees, wasps, and ants.


Breeding Bird Survey data show serious, ongoing declines in Olive-sided Flycatcher populations (up to 72% from 1966-2002). These declines may be due to fire suppression, pesticides, loss of forest to insects and acid rain, and, perhaps most significantly, habitat loss on their primary wintering grounds, where 85% of the forests have been altered.


Click here to find out more about how to help save this wintering habitat, which is vital to the Olive-sided Flycatcher’s continued survival!

Photo: Olive-sided Flycatcher by Peter LaTourrette; Range Map: ABC