Thirty-Seventh Winter Bird-Population Study
POPULATION STUDIES Thirty-seventh Winter Bird-Population Study Edited by Calvin L. Cink and Roger L. Boyd uETOT^L of 101studies submitted totals were 50.9 hours in mixed upland (a 12.6-ha area of suburban farmland in this year represents20 statesand habitat in Washington,D.C., and 48.7 California),and averaged 584. Total spe- provinces,the Districtof Columbia,and hours in mixed mesophytic woods, ciesranged from 0 (five agriculturalplots Colima, Mexico. Indiana toppedthe list fields, and brush, in Putnam County, in Indiana) to 63 (barrier beach and with 22 studies,thanks largely to the ef- Tennessee. saltwaterestuary in Florida), and aver- forts of J. S. Castrale and R. T. Speer, The total area covered this year was aged 16 specieson all this yeaifs cen- while Alaska came in second, with 12 11,922.3 hectares (29,460 acres), with suses. new studiesconducted by J. L. Trapp and an averagecensus area of 118 hectares. The datacompiled in the studieslisted J. G. King. Reportingfor the first time The largeststudy area was 2167.9 hec- below are being storedin a computerat were 32 studies, or 32% of the total. tares, covered on one of the studies of the Laboratoryof Ornithologyat Cornell Ninety-fiveobservers reported a total nearshore marine waters and tidal flats in University. Requestsfor informationon of 1009 hours in the field (not including the AlexanderArchipelago, Alaska. The how to obtain these data should be direct- resultsreported from prior years), and number of birds per square kilometer ed to: Gregory S. Butcher, Cooperative averaged9.9 hoursper plot. The highest rangedfrom 0 (in eightstudies) to 14,834 ResearchProgram, Cornell Laboratory of Ornithology, 159 SapsuckerWoods Road, Ithaca, New York 14850 (Tel.
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