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The refuge also administers the Shiawassee Management District which coordinates wetland restorations in 22 counties and oversees conservation easements in 44 counties of lower Michigan. The refuge is authorized to expand its present boundaries by 7,500 acres (30 km 2 ) along the Tittabawassee, Shiawassee, and Cass rivers from willing sellers.
The span between precocial and altricial species is particularly broad in the biology of birds. Precocial birds hatch with their eyes open and are covered with downy feathers that are soon replaced by adult-type feathers. [17] Birds of this kind can also swim and run much sooner after hatching than altricial young, such as songbirds. [17]
On the surface of the water they swim low with just the head and neck exposed. All species have lobed toes, and are excellent swimmers and divers. The feet are always large, with broad lobes on the toes and small webs connecting the front three toes. The hind toe also has a small lobe as well. The claws are similar to nails and are flat.
The American robin is the state bird of Michigan. This list of birds of Michigan includes species documented in the U.S. state of Michigan and accepted by the Michigan Bird Records Committee (MBRC). As of January 2023, there are 456 species included in the official list. [1]
World Aquatics Championships (50 m pool, open water), pool since 1973, open water since 1991 [3] [5] World Swimming Championships (25 m pool), since 1993, for example 2021 FINA World Swimming Championships (25 m) [3] World Open Water Championships, 2000 to 2010, for example 2002 FINA World Open Water Swimming Championships
The great blue heron (Ardea herodias) is a large wading bird in the heron family Ardeidae, common near the shores of open water and in wetlands over most of North and Central America, as well as far northwestern South America, the Caribbean and the Galápagos Islands. It is occasionally found in the Azores and is a rare vagrant to Europe.
[37] [44] Incubation is begun as soon as the first egg is laid, so they hatch asynchronously. If a clutch is lost (to predation or flooding, for example) before the young hatch, the red-throated loon usually lays a second clutch, generally in a new nest. [45] The young birds are precocial: upon hatching, they are downy and mobile, with open ...
There is a significant (p≤0.05) negative relationship between area of open water and sora use of wetlands in Maine [22] and sora relative abundance in Saskatchewan. [23] In western New York, sora nesting sites had a lower percentage of open water than random sites, [24] and in Arizona soras used open water areas less than their availability. [16]