Field
Guide IDs: BREEDING:
Open deciduous and
deciduous-coniferous woodland, riparian forest and
thickets. ? broods. DISPLAYS:
Female quivers
wings, often in response to courtship song of male.
Most courtship occurs within 30' of nest. Audubon
reported that male struts around female with wings
and tall spread. NEST:
Usu high in tree,
often lower (<30') in w in tree or shrub; very
well made, compact, basketlike deep cup, suspended
by rim from prongs of forked twig; of bark strips,
leaves, veg fibers, grass. EGGS:
White, spotted with
browns, black. 0.8" (19 mm). DIET:
Almost entirely
insects, some spiders; few berries. CONSERVATION:
Winters from n w
Mexico s to El Salvador. Common cowbird host, does
not attempt to destroy their eggs. Has declined in
urban areas from pesticide spraying of shade
trees. NOTES:
Forages and sings
mostly in treetops. Fearless around nest. Both
sexes brood. Uncommon migrant
throughout campus. A fairly common breeder in
riparian and foothill areas nearby, but not known
to breed on campus. ESSAYS: REFERENCES:
Howes-Jones,
1985.
Vireo gilvus Vieillot
NG-310; G-266; PE-226; PW-pl 49; AE-pl 454; AW-pl
514; AM(III)-104
Location
Type
Mating System
Parental Care
2ndary Diet..
Strategy
I:
12 DAYS
ALTRICIAL
30
feet - 90 feet
(4
feet - 90 feet)
(3-5)
MONOG
MF
GLEAN
Except for Stanford Notes, the material in this species treatment is taken, with permission, from The Birder's Handbook (Paul Ehrlich, David Dobkin, & Darryl Wheye, Simon & Schuster, NY. 1988). |