Motus (from the Latin word for "movement") employs relatively inexpensive, automated receiver stations to track birds, bats and even large insects fitted with very tiny (<0.2g) radio transmitters - species that are too small to be tracked with conventional telemetry. More than 500 such stations now exist, from the Canadian Arctic to South America, but their locations are largely coastal. The Northeast Motus Collaboration is filling the immense geographical gap in inland areas. In 2017, the collaboration installed a line of 20 Motus receivers in a line from southeastern Pennsylvania to Lake Erie, with funding in part by Pennsylvania Dept. of Conservation and Natural Resources. In its first season, the array detected more than 200 tagged individuals of dozens of species of birds and bats.

In 2018 the team is erecting an additional 12 towers in western Pennsylvania, with funding from the Richard King Mellon Foundation, while plans to expand the array throughout New York and interior New England are underway.