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Leslie Canyon MAPS Banding Complete for 2013
Southwest Region, August 7, 2013
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Black-throated sparrow, one of the more commonly banded birds on Leslie Canyon NWR
Black-throated sparrow, one of the more commonly banded birds on Leslie Canyon NWR - Photo Credit: C.D. Lohrengel
An intern removing an ash-throated flycatcher from the net
An intern removing an ash-throated flycatcher from the net - Photo Credit: C.D. Lohrengel
The western wood-pewee, a rare bird for Leslie Canyon MAPS
The western wood-pewee, a rare bird for Leslie Canyon MAPS - Photo Credit: C.D. Lohrengel

A Monitoring Avian Productivity and Survivorship (MAPS) program was established on Leslie Canyon National Wildlife Refuge (NWR)during the breeding season of 2002 and has been operated through 2013. The MAPS program is a cooperative effort designed to provide long-term data on population and demographic parameters for target landbird species. On the refuge, the information collected will provide a better understanding for the productivity, survivorship, and population trends of avian communities on the Leslie Canyon NWR. Regionally, this data will help contribute information that is critically needed for selected North American landbird species by providing annual regional indices and estimates for four population and demographic parameters: adult avian population size, post-fledging productivity, and adult survivorship and recruitment. The MAPS data is provided to a national database for the Institute for Bird Populations.

 

The 2013 MAPS season resulted in a total of 188 bird captures representing 42 species (0.35 birds per net-hour); 29 (15%) of the captures were re-captures from previous efforts. This compares to 2012 season data which resulted in 232 bird captures representing 48 species (0.43 birds per net hour) including 43 (19%) recaptures. During 2013, several birds were released unbanded, including a few birds that escaped handlers and all hummingbirds, for which refuge staff do not have a permit to band.

The number of bird captures was low during 2013 when compared with previous years. Temperatures were typical and favorable during this year’s banding period, and precipitation at the banding site was ample. In fact, rainfall in the upper watershed resulted in several flood events through the refuge, including a record breaking flood cresting at over nine feet with a peak exceeding 4,500 cfs on July 11. However, the continued lack of meaningful winter precipitation during the past several years is taking an unprecedented toll on water availability in Leslie Creek, which flowed only intermittently at the USGS weir during 2013 and was dry much of the year. This lack of water appears to be negatively impacting the number of resident and migratory birds and other wildlife supported by the Refuge.


Contact Info: Christopher Lohrengel, 520-364-2104 x.106, chris_lohrengel@fws.gov



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