Abstract
Abstract Wood Storks (Mycteria americana) breed in colonies widely dispersed across approximately 3,350 km2 within the United States, and effective monitoring of this population presents immediate tradeoffs between coverage, accuracy, and cost. Here, we summarize surveys in Florida 1991-2005 as a first step towards improving existing survey strategies. In order to determine whether counts from aircraft are a suitable technique for quantifying nests, we compared aerial and ground counts at the same eleven colonies in 2004. Across all colonies, aerial counts averaged 8.1% more nests, probably as result of either better visibility or mistakenly including Great Egret (Ardea alba) nests in the count. During the period 1991-2005, statewide totals in Florida ranged from 2,211-6,449 nests, with an apparently increasing trend through time. Annual modal colony size fluctuated from 65-144 nests, with significantly smaller modal size in 2001-2004, suggesting that colony size has decreased over time. Current survey pr...
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