Field Notes
U.S. Fish & Wildlife Service
Field Notes Entry   
Leslie Canyon National Wildlife Refuge MAPS Banding for 2010 Complete
Southwest Region, September 15, 2010
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A Monitoring Avian Productivity and Survivorship (MAPS) program was established on Leslie Canyon National Wildlife Refuge during the breeding season of 2002 and has been operated through 2010.  The information collected will provide a better understanding for the productivity, survivorship, and population trends of avian communities on the Leslie Canyon National Wildlife Refuge. 

The 2010 MAPS season resulted in a total of 217 bird captures representing 40 species (0.40 birds per net-hour); 25 (12%) of the captures were re-captures from previous efforts.  This compares to 2009 season data, which resulted in 426 bird captures representing 51 species (0.79 birds per net hour) including 63 (15%) recaptures.  During 2010, 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. 

Bird captures were significantly lower during 2010 than in previous years.  Temperatures were essentially normal during this year's banding period, but precipitation at the banding site remained atypically low throughout the monsoon season.  The lack of meaningful winter precipitation during the past several years is taking an unprecedented toll on sustained flow in Leslie Creek, which quit flowing at the USGS weir during November and never resumed during 2010 except for a ten day period following a rain event.  Even though Leslie Creek stopped flowing early in the year, portions of the stream remained wet in the form of isolated pools.

The ten most-commonly-captured species during 2010 MAPS banding were: Black-chinned Hummingbird (20%); Broad-billed Hummingbird (17%); Blue Grosbeak (5%); Yellow Warbler (5%); Bewick's Wren (5%); Wilson's Warbler (4%); Costa's Hummingbird (3%);  Ash-throated Flycatcher (3%); Bell's Vireo (3%); Lucy's Warbler (3%); and Summer Tanager (3%).

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