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Hi All, Nocturnal migration at Carleton, Yarmouth County, was steady and slightly down from last week with a call count of 759, down from 890. Warblers accounted for 96% of the calls while the remaining 4% were thrush calls (Swainson's Thrushes and one Veery). A total of 20 species of warblers were recorded. American Redstarts again overwhelmed the counts with 221 calls and an estimated minimum number of 132 individual birds. Ovenbird overtook Magnolia Warbler in second place with 98 and 57 calls respectively. Black-and-White and Chestnut-sided Warblers continued in good numbers. Yellow Warblers already showed signs of declining numbers while Common Yellowthroats began to increase. Cape May Warblers put in a better showing this week while Black-throated Blue Warblers continued stronger than in previous years. Less common or rare warblers included one Prairie Warbler and a possible Prothonotary Warbler. For those who are interested, the possible Prothonotary Warbler can be heard and its spectrogram viewed at: https://www.youtube.com/watch?v=46DDNqFv72c. A formatted version of this report and all the reports for this season at Carleton can be viewed at: http://www.johnfkearney.com/Carleton_YarmouthCounty_2015.html. A table summarizing this week's nocturnal migration follows. Total Calls followed by Estimated Minimum Number of Individuals American Redstart 221 132 Ovenbird 98 69 Magnolia Warbler 69 52 Unidentified Warbler 57 53 Black-and-White Warbler 50 35 Chestnut-sided Warbler 43 33 Unidentified Warbler Genus Setophaga 37 34 Common Yellowthroat 32 23 Northern Parula 32 21 Swainson's Thrush 26 14 Cape May Warbler 19 9 Yellow Warbler 18 13 Black-throated Blue Warbler 12 8 Northern Waterthrush 12 9 Canada Warbler 7 7 Blackpoll Warbler 5 5 Blackburnian Warbler 4 4 Black-throated Green Warbler 4 4 Unidentified Warbler Genus Oreothlypis 4 2 Bay-breasted Warbler 3 3 Nashville Warbler 1 1 Prothonotary Warbler 1 1 Prairie Warbler 1 1 Savannah Sparrow 1 1 Tennessee Warbler 1 1 Veery 1 1 Total 759 536
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