Open year round, dawn to dusk The 120-acre Alewife Reservation is among metropolitan Boston's largest urban wilds and provides habitat for an array of indigenous and migratory birds including Osprey and the Great Blue Heron. The anadromous Herring migrates each spring from the Atlantic Ocean to the Reservation's Little Pond and Blair Pond to spawn. A major portion of the Alewife Reservation is designated wetland and contains Little Pond, the Little River, and the Alewife Brook. A wooded uplands and meadow provides the opportunity to view the unusual mating ritual of the woodcock, a rare sight in an urban area. The Reservation is located at the end of the Minuteman Bike Path in Arlington and is within easy walking distance of the Alewife MBTA Station. There is limited access for hikers and birdwatchers.