This file contains breeding bird censuses using 50 m radius counting circles at locations on Plum Island, Massachusetts in the Parker River National Wildlife Refuge, Massachusetts.
Standard breeding bird censuses with 50 m radius counting circles. Observing periods divided into 0-3 min, 3-5 min, and 5-10 minutes for comparison with other censuses. For 3-5 min period, only additional birds not recorded in the 0-3 period are recorded. For 5-10 min period, only additional birds not recorded in the 0-5 min period are recorded. Birds recorded either visually or by sound. Counting circle boundaries set a minimum of 200 m from each other. Counts carried out from late May through early July with most counts in June. Placement of circles encompassed a variety of habitats.
Counting circles located on Plum Island and cover the length of the Parker River National Wildlife Refuge on the island from near the entrance booth at parking lot 1 to Stage Island Pool. Counting circles set up in close proximity to the refuge road.
Version 02, 21Feb2011 updated bird number variable name to include NumBird instead of only numbers, ie 0-3<50m changed to IndBird_0-3_50m.
Version 03: January 20, 2017, data and metadata updates to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007_Jul2016.xlsm 7/20/16 5:08 PM for QA/QC to EML 2.1.0
Version 04: March 18, 2019, data and metadata updates to comply with importation to DEIMS7 and LTER Data Portal. Used MarcrosExportEML_HTML (working)pie_excel2007_Jan2018.xlsm 6/21/18 3:53 PM for QA/QC to EML 2.1.0