Spring 2026 monitoring involves two automatic bird call detection programs, Tseep-r and Nighthawk-0.3.1. Tseep-r detects short bursts of acoustic energy in the 5-10 kHz frequency band -- short high pitched calls anlagous to a single cricket chirp. This includes most warbler and sparrow night flight calls, but also raindrops and other environmental noises. All Tseep-r detections come into the archive in near real-time during the night and warbler & sparrow calls are manually extracted from the noise and classified to species by a trained human between 2-6AM EDT (GMT -4) daily from April 15 - May 30. If a large coastal flight ("megaflight") is occurring after 2AM, a text alert is sent out to those signed up around 5am.

The second software program operating is Nighthawk-0.3.1. It is a machine learning model that has been trained toward automaticlly detecting certain species of avian nocturnal flight calls. At 7AM it begins work on classifying calls in the  all-night recordings produced by the monitoring stations -- results from the previous night are typically posted to the archive by noon. Weekly data summaries for six species are available at the link below.