Excerpt:

Tern Watch is a volunteer predator observation program at Alameda Point. The intention of Tern Watch is to give a broader picture of predator presence during the least tern breeding season, allowing USFWS to conduct proactive predator management. Annually, volunteers are recruited and trained to observe the tern colony from a vehicle outside the colony fence line, for three hours at a time. Volunteers record predator and Least Tern activi- ties during daytime hours, seven days a week.