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TableĀ 1 Number of nest boxes and occupied boxes from 2004 to 2012

From: Old nest material functions as an informative cue in making nest-site selection decisions in the European Kestrel (Falco tinnunculus)

YearNo. of nests (new/old)With nest materialsNo. of occupied nests boxes
WNMEKMGTMERSMANMSESMOTM
200461 (61/0)19020400021
200556 (15/41)211145120316
200658 (8/50)191710660017
200774 (12/62)302211530322
200874 (9/65)19171016201015
200968 (8/60)201251509711
201052 (12/40)201010312614
201133 (7/26)147031261
201264 (59/5)2005382441
  1. Nest materials were categorized into seven types based on previous breeders and manipulation treatments in the study: without nest material (WNM), old European Kestrel nest material (EKM), Great Tit nest material (GTM, both new and old), old Eurasian Red Squirrel nest material (ERSM), artificial nest material of dry leaves and branches (ANM), simulated nest material of Eurasian Red Squirrel (SESM), and other types of nest material (OTM, mainly including old Mandarin Duck and Ural Owl nest materials)