Late February - April. Canada and snow geese number in the tens of thousands. Many species of ducks stop on their way to breeding grounds farther north. Look for ringnecks, hooded mergansers, shovelers, mallards, widgeon and canvasbacks. Listen for spring peepers and tree frogs in the shallow ponds. Shorebirds common early-May to mid-June. Watch for peregrine falcons and other birds of prey swooping over congregations of shorebirds in search of a meal. Warblers peak mid-May. Visit the Esker Brook Trails for your best chance to view these little migrants.

Bald eagles generally hatch mid-April. Young eagles often spotted atop muskrat houses on the Main Pool and Tschache Pool. Osprey hatch by mid-May and grow quick and strong for their fall migration--some go as far as South America.

Canada geese and several duck species nest on the refuge beginning in early-March. Watch for broods in early-May and see them grow throughout the summer. Scan the water at the beginning and end of the Wildlife Drive to see wood duck broods. Pied-billed grebes and American coots also nest and raise young here. Great blue herons nest in the woods adjacent to the Main Pool; although the rookery is not visible from the Wildlife Drive, herons make a good show throughout the summer (also look for green and black-crowned night herons). Cerulean warblers, rare in New York State, often nest in the trees at the head of the Wildlife Drive. Black terns may also nest on the Refuge; if you see a brood, please contact refuge staff.

Mid-August through mid-October offers great opportunities to view shorebirds (peak mid-September). Killdeer, yellowlegs, and plovers feast on the exposed mudflats. Montezuma boasts several areas managed for shorebirds. Ask at the Visitor Center to see which one's hot! 

The Wildlife Drive is generally closed to traffic in winter. You can cross-country ski or snow shoe on the Wildlife Drive or the refuge's nature trails, taking advantage of the excellent opportunity to see white-tailed deer, fox, small mammals and resident birds such as woodpeckers, nuthatches, cardinals, and chickadees. Our bald eagles also stay the winter, as long as the canals remain unfrozen.