Long-billed and Curved-billed Thrashers live in mostly Texas and Mexico.
Brown Thrashers are in TX in migration and are range East of the Rockies to Florida.
Brown Thrashers are backyard birds for us in MiN. All are twice the size of Ovenbirds.
Ovenbirds are small (7 inches) Woodland Warblers that migrate to Minnesota and North. There coloring are similiar to the Thrashers but have a stripey crown and a white eyering.