A Monarch butterfly wears a Motus nanotag transmitter.

A migration tracking system that can track movements of birds, bats and even large insects will soon expand across New England, thanks to a nearly $1 million federal grant.

The grant will be used to establish 50 automated telemetry receiving stations in Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont. The receivers can track movements of animals tagged with radio transmitters. These nanotags are tiny enough to be placed on monarch butterflies and dragonflies.