The Hudson River Estuary Program and Scenic Hudson are working with citizen scientists to monitor herring and American eel in Ulster County's Black Creek Preserve.
Herring volunteers will observe the creek to see if, where, and when spawning runs occur. Those interested in eels will use nets and trap devices to catch juvenile glass eels, which are counted, weighed, and released unharmed.
Data may help biologists discover why populations of these important fish are declining.
