Surveys of salt marsh breeding birds using point counts

This data set contains the results of point count surveys of breeding birds in the salt marshes of the Plum Island Estuary. Surveys have been carried out each year in June beginning in 2004 and are ongoing. Currently six circles of 100 m radius are being surveyed. Three of the circles are in plots that had been regularly hayed and three in unhayed plots. Currently only one of the plots is regularly hayed. 71 species recorded as of 2011 Most frequently encountered are Agelaius phoeniceus, Ammodramus caudacutus, Tringa semipalmata