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Field
Guide IDs: BREEDING:
Open woodland,
shrubland, farms, suburbs. >1? brood. DISPLAYS:
? NEST:
In natural cavity,
also amid roots of upturned tree, in variety of
other cavities, in center of brushpile; of twigs,
grass, lined with feathers, grass. EGGS:
White, flecked with
browns, purple, occ wreathed; occ almost unmarked.
0.7" (17 mm). DIET:
Includes
spiders. CONSERVATION:
In winter, largely
resident but some move s to c Mexico. Uncommon
cowbird host. Blue List 1972-86; declining
everywhere e of Mississippi River. NOTES:
Male songs show
marked geographic variation: males in AZ sing short
simple songs but have song repertoires of 15 +
songs each; males in CO sing long complex songs but
have song repertoires of only ca. 10 songs each;
population density, habitat structure, and possibly
the vocal milieu associated with avian community
composition may influence the nature of geographic
variation of songs. Male may build crude "dummy"
nests. Occ attack nests of other Bewick's Wrens and
of other species nesting nearby. Uncommon to locally
common resident virtually throughout campus,
occurring primarily in dense patches of brushy
vegetation. Distributed fairly sparsely on most of
main campus but more common and widespread in
woodland and scrub habitats near the Dish and
around faculty housing. ESSAYS: REFERENCES:
Kroodsma,
1985. |
