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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]
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]
Birds from temperate North America east of the Rocky Mountains migrate to the southern United States and southern British Columbia. It is often a year-round resident where water remains open in winter. The number of birds that stay year-round near the northern limit of the species' range seems to be increasing. [20] [21]
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 breeding habitat is open and semiopen areas across North America east of the Rocky Mountains. The nest is a well-concealed cup in dense trees (particularly pine) or shrubs, usually near water; sometimes, the common grackle nests in cavities or in man-made structures. It often nests in colonies, some being quite large.
The barn swallow typically feeds in open areas [49] 7–8 m (23–26 ft) above shallow water or the ground often following animals, humans or farm machinery to catch disturbed insects, but it will occasionally pick prey items from the water surface, walls and plants. [6]
Record warmth and little snow in the winter of 2023-24 have allowed many birds to migrate back to Wisconsin far earlier than normal this spring. Smith: Gone barely a month, migrating birds are ...
As large wading birds, great blue herons are capable of feeding in deeper waters, thus are able to harvest from niche areas not open to most other heron species. Typically, the great blue heron feeds in shallow waters, usually less than 50 cm (20 in) deep, [ 20 ] or at the water's edge during both the night and the day, but especially around ...