Eastern North America acoustic monitoring transect
Week of 9-16 September 2012
Total warbler and sparrow night flight calls recorded during the week
American Redstart Black-and-white Warbler Black-throated Blue Warbler Canada Warbler Cape May Warbler Common Yellowthroat Chestnut-sided Warbler Hooded Warbler Lincoln's Swamp complex Mourning Warbler Northern Parula Ovenbird Savannah Sparrow Wilson's Warbler White-throated Sparrow "Zeep" complex" "Double up" complex
The data consist of the ratios of the total calls of a species category to all warbler and sparrow calls recorded at a station during the week - note that the y-axis has variable scale. Species data are preliminary classifications. Refinement of data may occur and will be indicated by updated dates on graphs. Graphs without dates were published on September 17, 2012.
For an example of interpreting these data, if one were listening to avian night flight calls in western Massachusetts this past week, the data presented suggests that one would have been nearly ten times more likely to hear a Parula Warbler night flight call than someone listening in north-central Indiana (see Northern Parula).
Flight calls and more information about each station are accessible from the Daily data page
