Summary statistics
Number of detections by date
Calendar heatmap shows number of detections present on each date
Data are filtered to limit detections to one per quarter hour per species
Detections by Week
Data are filtered to limit detections to one per quarter hour per species
minimizing the impact of repeat calls
Detections by time of day
Detections are summed for each hour interval
Distribution of detection confidence levels
Confidence levels below 70% were excluded
Black-throated Blue Warbler
Setophaga caerulescens
[Photo by Claus Holzapfel]
Basic detection statistics for the species