Range. - Eastern Mexico And Southern Texas.
This odd species has a brownish crown, olive greenish upperparts, wings and tail, and grayish white underparts. They are common resident birds along the Lower Rio Grande, being found in tangled thickets, where they nest at low elevations, making their quite bulky nests of coarse weeds and grass and sometimes twigs, lined with finer grass and hair; they are often partially domed with an entrance on the side. Their eggs are plain white, without markings; often several broods are raised in a season and eggs may be found from May until August.