GREENE – The elusive gray tree frog is among the evening creatures that naturalist Dana Little will attempt to locate from 8 to 10 p.m. Saturday, May 19, at the Androscoggin Land Trust’s Hooper Pond Preserve.

Little expects to hear spring peepers, leopard frogs and green frogs. The event will occur rain or shine because the frogs enjoy rain. The time has been chosen to include the last light of the day, twilight and full darkness.

At dusk, in addition to frogs, participants will listen for woodcock, snipe and nighthawks. When it is dark they will try to call up barred, great horned and saw whet owls using voices, whistles and pre-recorded calls.

To hear the creatures everyone should be prepared to be absolutely quiet for extended periods of time. Mosquitoes, black flies and all biting insects will be out. The trust hopes to have captured some representative frogs prior to the event to see up close.

Participants should bring waterproof shoes, bug dope and an umbrella if needed. A flashlight will come in handy to spot wildlife. For directions or more information, call Mike Auger, director of land protection and stewardship, at 782-2302.

Hooper Pond Preserve is an ideal place for a quiet paddle across the pond or moderate forest hike. Androscoggin Land Trust owns 195 acres of wetlands and an upland forest around Hooper Pond and Hooper Brook.

The Maine Department of Conservation identified the area as being of statewide ecological importance due to its exemplary pond and stream shore vegetation and high-quality wildlife habitat.

The trust purchased most of the land from Robert and Eva Philbrook and Pat Malmo and Richard Blaisdell in 2003 and 2004 with assistance from the Land for Maine’s Future fund. The trust was given 13.5 acres of wetland property by Barbara Bubier in 2003 and an additional 7.5 acres by Steve and Kathy Boucher in 2004.

Androscoggin Land Trust is a membership-supported conservation organization dedicated to protecting the natural areas, landscapes and outdoor experience along the central Androscoggin River corridor.

It conserves more than 2,800 acres of land, including six miles of riverfront along the Androscoggin River. Visit www.androscogginlandtrust.org for more information.