The same
management tools that provide Black-capped Vireo habitat will also maintain diverse and
productive rangelands and provide recreational opportunities (Campbell, 1995). These tools
include prescribed burning, selective brush management, grazing management, and reducing
cowbird parasitism.
Prescribed burning conducted prior to March 15 can control small
juniper, thus maintaining the relatively open shrublands preferred by vireos Campbell,
1995). Burns conducted under hotter conditions can set back plant succession in order to
create new vireo habitat, but should only occur in areas not already occupied by vireos
(Campbell, 1995).
The selective removal of juniper, mesquite, or pricklypear serves
to maintain a relatively open shrub canopy and encourages growth of broad-leaf, deciduous
shrubs, which are ideal conditions for vireo nesting (Campbell, 1995). Key woody plant
species can be increased by stimulating basal sprouting, through mechanical methods such
as chaining, roller chopping, or shredding (Campbell, 1995).
To provide adequate nesting cover for vireos, woody plants should
receive only limited browsing during the spring and summer (Campbell, 1995). Grazing
cattle instead of goats and sheep and controlling deer populations can keep browsing to a
minimum. In addition, grazing management plans should be attentive to fine fuel needs for
prescribed burning, if burning will be used to improve vireo habitat.
Grazing cattle and the easily-available sources of food associated
with them (such as spilled grain) attract cowbirds. Grazing management can be used to
remove cattle at critical times from areas where vireos nest, thus reducing the number of
cowbirds in the area (Campbell, 1995). Cowbirds can also be trapped or shot. Mobile traps,
placed near watering sites as livestock are rotated through pastures, have been used
successfully to reduce cowbird numbers (Campbell, 1995).
More detailed management guidelines are available from the Texas
Parks and Wildlife Department and the U.S. Fish and Wildlife Service for landowners and
managers wishing to know more about rangeland management practices which improve habitat
for the Black-capped Vireo (Campbell, 1995).