Birds
Brown Thrasher
Toxostoma rufum · also called brown thrashers
A brown thrasher perches atop a thicket and runs through phrase after phrase of its enormous song repertoire, each one sung exactly twice before moving on, an ever-shifting performance that can stretch on for many minutes at a time.
Overview
The brown thrasher, Toxostoma rufum, is a large, reddish-brown songbird native to forest understory and grassland edge habitat across the eastern and central United States. Its extraordinary song repertoire of over a thousand phrases, fierce nest defence, and curved leaf-litter-foraging bill make it one of the more vocally impressive and behaviourally assertive birds in eastern North America.
A singer with an almost endless setlist
Where most songbirds cycle through a handful of set phrases, the brown thrasher draws on a repertoire so vast that a single extended performance can feel like it never quite repeats itself.
Status
Least Concern but decreasing, linked in part to the loss of dense shrubby habitat the species depends on for nesting and foraging.
Brown Thrasher: common questions
How many songs can a brown thrasher actually sing?
This species can sing over a thousand distinct song phrases, often incorporating sounds mimicked from its environment, giving it one of the largest and most varied vocal repertoires of any bird in North America.
How can you tell a brown thrasher's song apart from a mockingbird's?
The brown thrasher generally repeats each phrase exactly twice before moving on to the next one, while the closely related mockingbird typically repeats its phrases three or more times, a useful clue for telling the two similar-sounding singers apart by ear.
Is the brown thrasher dangerous to approach near its nest?
It can be surprisingly aggressive, defending its nest fiercely against intruders, including people, and striking hard enough with its bill to draw blood if someone gets too close, a defensive intensity unusual for a bird of its size.
What does a brown thrasher use its curved bill for?
It uses its long, downward-curved bill to sweep through leaf litter on the forest floor, uncovering insects and other small invertebrates hidden beneath the debris, a foraging technique well suited to its ground-level feeding habits.