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Tundra swans are sometimes separated in the subgenus Olor together with the other Arctic swan species. Bewick's swan was named in 1830 by William Yarrell after the engraver Thomas Bewick, who specialised in illustrations of birds and animals. [5] Cygnus is the Latin for "swan", and columbianus comes from the Columbia River, the type locality. [6]
Refuge map. Lewis and Clark National Wildlife Refuge, near the mouth of the Columbia River, provides wintering and resting areas for an estimated 1,000 tundra swans, 5,000 geese, and 30,000 ducks. Other species include shorebirds and bald eagles.
Tinemaha Reservoir is a reservoir created by a dam on the Owens River in the Owens Valley.It is located in Inyo County, eastern California.. It is part of the Los Angeles Aqueduct system, operated by the Los Angeles Department of Water and Power.
The trumpeter swan (Cygnus buccinator) is a species of swan found in North America.The heaviest living bird native to North America, it is also the largest extant species of waterfowl, with a wingspan of 185 to 304.8 cm (6 ft 2 in to 10 ft 2 in).
"Tundra swans, while seen in flocks during migration, separate in solitary pairs (and) mate for life," according to the U.S. Fish and Wildlife Service.
The diet of adult acorn woodpeckers in the breeding season in California has been estimated to be 90% acorn, on the basis of isotope analysis, [426] but birds in Mexico are about 50% herbivorous year-round [427] The red-bellied woodpecker can be ~65% herbivorous across fall and winter [428] or 94-96% herbivorous in winter [425]
A stretch of Interstate 80 in California near the Nevada state line more than 70 miles long was closed for more than two days after highway officials reported stranded drivers Friday night.
Swans' nests are on the ground near water and about a metre (3') across. Unlike many other ducks and geese, the male helps with the nest construction, and will also take turns incubating the eggs. [26] Alongside the whistling ducks, swans are the only anatids that will do this.