Troglodyte du Sinaloa Thryophilus sinaloa

Small skulking wren of lowlands and foothills in West Mexico. Plumage rather plain, with bold white eyebrow and diffuse stripes on sides of neck. Compare with brighter rufous and buffy Happy Wren, which also has a more distinct black mustache stripe. Sinaloa Wren favors thorn forests, plantations, and thickets, often in slightly more open habitats than Happy Wren. Heard more often than seen. Song is a powerful series of rich whistles, quite different from sweeter Happy Wren song. Scolding calls vary, but does not make “comb trill” of Happy.