Document Type
Article
Publication Date
1999
Abstract
There are no published records of Northern Beardless-Tyrannulet (Camptostoma imberbe) and Tropical Parula (Parilla pitiayumi) nesting in the Lower Rio Grande Valley of Texas since the late 1940s. In this 1996- 1998 study, both species were confirmed nesting at Santa Ana National Wildlife Refuge, and Northern Beardless-Tyrannulet was also confirmed at Bentsen Rio Grande Valley State Park. Most Northern Beardless-Tyrannulet nests were between clumps of ball-moss (Tillandsia recurvata) in cedar elm (Ulmus crassifolia) trees, and nests were active from 21 March-23 September. Only fe. males build nests or incubate. Two-three young fledged per successful nest, but three nests were abandoned after heavy rains. Tropical Parulas maintained 2-5 territories/year at Santa Ana but were absent from Bentsen-Rio Grande Valley State Park. A Tropical Parula pair fed a fledgling Brown-headed Cowbird (Molothrus ater) at Santa Ana in 1997.
Recommended Citation
Brush, T. "Current status of Northern Beardless-Tyrannulet and Tropical Parula in Bentsen-Rio Grande Valley State Park and Santa Ana National Wildlife Refuge, southern Texas." Bulletin of the Texas Ornithological Society 32 (1999): 3-12.
Publication Title
Bulletin of the Texas Ornithological Society