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The Hummingbird Monitoring Network |
The following is extracted from their promotional leaflet:
In 2002, we
began a hummingbird research project with the following goals: to determine the
best long-term monitoring sites for hummingbirds in western USA and
northwestern Mexico, to learn how to effectively sample their population sizes,
and to use the resulting information to assist in their preservation and
protection. In North America, hummingbird diversity is highest in southwestern
USA and most of these species are dependent on habitats in Mexico for their
winter survival and, for some, breeding.
This research generates knowledge about
hummingbird diversity, abundance, productivity, and survivorship in a variety
of habitats. Study sites occur in vegetation zones at different elevations,
longitudes, and latitudes. It is a systematic banding study that will detect
movement patterns for many hummingbird species in western USA and eventually
northwestern Mexico. It defines a methodology that when used by others will
yield data that can be statistically compared. Thus, we can begin to understand
how hummingbird diversity varies from place to place and from region to region
and how hummingbirds move through these regions. The results of the research
should provide land managers with information about which areas support a high
diversity of hummingbirds, the timing of their occurrence, and seasonal
movement patterns that may indicate the size of the areas needed to maintain
hummingbird diversity and abundance. It also has provided and will continue to
provide training for students, scientists, and members of the general public in
the skills required for hummingbird study. Because hummingbirds capture
people's imagination, they are excellent subjects for conservation education,
one of our main objectives.
For this project, we band hummingbirds
once every other week from mid-March to late October. Banding techniques allow
researchers to assess population sizes of hummingbirds and other landbirds. Our
banding occurs at multiple sites at different elevations, longitudes, and
latitudes in a variety of vegetation zones. Each banding session lasts five
hours and begins within one half hour of sunrise. Because banding at each site
follows a standardized methodology, changes in species occurrence and abundance
patterns can be compared among years and among sites. Analyses of these data
will help identify important areas for hummingbird migration and breeding. At
the end of a season, results from each site are evaluated to determine which
sites are still contenders for long-term monitoring sites or if a new site
should be added and evaluated. Because hummingbirds have unique flight
abilities and require specialized permits to work with them, other avian
conservation programs such as MAPS (Monitoring Avian Productivity and
Survivorship) fail to adequately sample hummingbird populations.
In 2003, we have expanded to 14 study
sites in Arizona and 5 in California. This project is an extension of the
Migratory Pollinators Program of the Arizona-Sonora Desert Museum (ASDM) and
has involved many partners of DSCESU. Two of the primary investigators are
associated with partners of DSCESU: Ms. Carlson is the Director of 3 Natural
Reserves for the University of California at Riverside and Dr. Wethington is a
research associate at the Arizona-Sonora Desert Museum. We are also working in
three National Parks: Tumacacori National Historical Park, Coronado National
Memorial, and Chiricahua National Monument, on BLM land in California, and will
soon start a site on US Forest Service land. Additionally, we work with many
private landowners as well as a prospective new DSCESU member.
If you are interested in becoming a
citizen scientist and joining this all volunteer project, please let the
banding team know and they will give you a card with contact information.
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