Hutton's Vireo Vireo huttoni Cassin       Field Guide IDs: NG-308 G-264; PW-pl 49; AW-737; AM(III)-102 Nest Location Nest Type Eggs & Mating System Dev. & Parental Care Primary & 2ndary Diet.. Foraging Strategy MF I: 14 DAYS ALTRICIAL CONIFER TREE 6 feet - 25 feet MF 4 (3-5) MONOG F: 14? DAYS MF BERRIES BREEDING: Woodland, esp oak and pine-oak. ? broods. DISPLAYS: Courting male postures before female, fluffs feathers, fans tail, and gives "whining" or "snarling" call. NEST: Suspended by rim in fork of twig usu of evergreen oak; deep and round, of "Spanish moss" (lichen) bound with spider web, lined with fine dry grass. EGGS: White, spotted with browns, mostly near large end, occ unmarked. 0.7" (18 mm). DIET: Includes spiders. CONSERVATION: Winter resident. Uncommon cowbird host NOTES: Fearless around nest. May compete for food resources with ecologically similar Chestnut-backed Chickadee where both are resident. STANFORD. NOTES: Uncommon resident in habitats dominated by coast live oaks. Few pairs breed on campus, although a pair or two can usually be found near the Mausoleum at any time of year. ESSAYS: Bird Guilds; Masterbuilders; Nest Materials. REFERENCES: Wagner, 1981; Weathers, 1983.