Acoustic monitoring station at Chatham, NY

American Redstart        Black-and-white Warbler        Black-throated Blue Warbler        Canada Warbler        Cape May Warbler        Common Yellowthroat        Chestnut-sided Warbler        Double-up complex       

Mourning Warbler        Northern Parula        Northern Waterthrush        Ovenbird        Savannah Sparrow        Wilson's Warbler        Zeep complex

Proportion of Double-up complex night flight calls among all warbler and sparrow night flight calls (nfcs). Comparison of the mean from 2012-2014 with 2015.

Daily datapoints are mid-week dates of weekly call totals, for example the first data  in 2015 (Aug 13) indicates the proportion of DBUP nfcs in the seven-day period from 9pm Aug 10 through 5am Aug 17.


2012-2014 VARIANCE


Double-up complex Spectrographic Examples


7-night warbler and sparrow call totals: 2012 | 2013 | 2014 | 2015


* Double-up complex includes Tennessee Warbler, Black-throated Green Warbler, Nashville Warbler and Orange-crowned Warbler.