Black-throated-Gray Warbler Dendroica nigrescens Townsend       Field Guide IDs: NG-376; G-282; PE-232; PW-pl 50; AW-pl 608; AM(II)-136 Nest Location Nest Type Eggs & Mating System Dev. & Parental Care Primary & 2ndary Diet.. Foraging Strategy F? I: ? DAYS ALTRICIAL DECID TREE 5 feet - 50 feet (1 foot - 50 feet) F? 4 (3-5) MONOG F: ? DAYS MF HOVER & .....GLEAN HAWKS BREEDING: Open, dry coniferous and coniferous-deciduous forests, chaparral, scrub, oak and pinion montane woodlands. 1 brood. DISPLAYS: ? NEST: Usu far out on horizontal branch; neat, of weed stalks, grass, plant fibers, lining always contains feathers, often hair, moss. EGGS: White to creamy, marked with browns, usually wreathed. 0.6" (16 mm). DIET: Largely or entirely insects during nesting. CONSERVATION: Winters s to s Mexico. Rare cowbird host. NOTES: Very active and agile forager. Details of breeding biology little known. STANFORD. NOTES: ESSAYS: Bird Communities and Competition; Mobbing; Bills; Feathered Nests; How Do We Find Out About Bird Biology?. REFERENCES: Morrison, 1982.