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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]
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 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.
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
Open water swimming is a swimming discipline which takes place in outdoor bodies of water such as open oceans, lakes, and rivers. Competitive open water swimming is governed by the International Swimming Federation, World Aquatics (formerly known as FINA), except when it is part of multi-sport events , which are governed by the World Triathlon .
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]
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Seabirds, on the other hand, tend to fly for extended periods in open air because land masses are distantly separated and floating on the surface of the water can be metabolically costly due to the temperature differential between air and sea water. As a result, large sea birds rely mostly on soaring flight because it allows these animals to ...