Amphibian & Bird Survey Station Features
Amphibian presence and number in a wetland are indicative of the over all health and function of the system. Three surveys over the course of the spring are undertaken approximately 15 days apart. All calling amphibians by species and number are recorded over a three minute window beginning no earlier than a half hour after sunset. The target species of the bird surveys include Pie-billed Grebe, Moorhen, Sora, Virginia Rail, King Rail, Least Bittern and American Bittern; all dependent on emergent marsh vegetation for breeding habitat and all showing declining population trends in the Great Lakes Basin. Bird surveys involve a five minute silent observation window, a five minute period broadcasting target species' calls and ends with another five minutes of observation.
Station A is located at the marsh outlet and access to the agricultural lands situated between Huff Wetland and the lower Grand River. Spring peeper, chorus frog, leopard frog, American toad, gray tree frog were recorded here since 2015. Several bird species were also recorded, but none of the target species until 2018 when Least Bittern responded to the broadcast.
Above: East half of the view from Station A.
Above: West half of the view from Station A.
Station B is located on the edge of a dense cattail bay bordered by large trees and a dense band of shrubs. Spring peeper, chorus frog, leopard frog, American toad, gray tree frog were recorded here since 2015. Several aerial foragers and other bird species were also recorded, and the target species Least Bittern in 2018.
Above: East half of the view from Station B.
Above: West half of the view from Station B.
Station D is located along a treed shoreline with a dense shrub layer and overlooks a band of moderately dense cattail. Spring peeper, chorus frog, leopard frog, American toad and gray tree frog were recorded here in 2015. Target species Virginia Rail (2015-2017) and Sora (2015-2016) have responded to broadcast calls and several other bird species were recorded since 2015.
Above: East view from Station D.
Above: West view from Station D.
Above: South view from Station D.