are they under any threat of extinction?
Some migratory populations of sandhill cranes face population threats due to interspecies competition with snow geese. Since the 1990s, snow geese have eaten waste corn on which the cranes also rely prior to migration. Sandhill Crane populations are also threatened by hunting. It is legal to hunt cranes throughout the states of the Central Flyway, from the Dakotas and Wyoming south to Oklahoma and Texas.
Sandhill crane
Some migratory populations of sandhill cranes face population threats due to interspecies competition with snow geese. Since the 1990s, snow geese have eaten waste corn on which the cranes also rely prior to migration. Sandhill Crane populations are also threatened by hunting. It is legal to hunt cranes throughout the states of the Central Flyway, from the Dakotas and Wyoming south to Oklahoma and Texas. Nebraska is the sole state along the Central Flyway where hunting cranes is illegal. Despite losses from hunting, interspecies competition and other pressures such as habitat loss, the species has expanded its range. Since the early 2000s the sandhill crane has expanded both its winter (non-breeding) and breeding ranges northward, including into upstate New York. In the 21st century, parts of the Midwestern United States have seen an extensive rebound of the species.

is chlorine bleach a pure substance or mixture Calcium hypochlorite is an inorganic compound with formula Ca(ClO). It is the main active ingredient of commercial products called bleaching powder does this element form oxides as well? Yes - Dichlorine monoxide, Chlorine dioxide what is the use of the latter during crises? Yes - It was used in the decontamination of buildings in the United States after the 2001 anthrax attacks; it was used to eradicate dangerous mold from houses inundated by the flood water after the disaster of Hurricane Katrina in New Orleans, Louisiana. when did the disaster by the hurricane happen? August 29, 2005 over southeast Louisiana from which water body did it originate? Atlantic Ocean how did it affected the economy? The Bush Administration sought $105 billion for repairs and reconstruction in the region; Katrina damaged or destroyed 30 oil platforms and caused the closure of nine refineries; hundreds of thousands of local residents were left unemployed what effects did it have on the environment? Beach erosion, massive tree loss along the Gulf Coast; Breton National Wildlife Refuge lost half its area in the storm. As a result, the hurricane affected the habitats of sea turtles, Mississippi sandhill cranes, Red-cockaded woodpeckers, and Alabama Beach mice. when was this refuge set up? UNANSWERABLE by whom is it managed? United States Fish and Wildlife Service. does it have specially designated areas? UNANSWERABLE what is the temperament of the cranes who were affected by the hurricane? They are fairly social birds that usually live in pairs or family groups through the year.
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Sandhill crane [SEP] Status and conservation
In the 20th century, sandhill cranes were generally extirpated east of the Mississippi River. Although sandhill cranes are not considered threatened as a species, the three southernmost subspecies are quite rare. Resident populations, not migratory birds, cannot choose secure breeding habitat. Many subpopulations were destroyed by hunting or habitat change. Their desirability as a delicious game bird brought them the nickname of "Rib-eye of the sky" by a small group of modern hunters. The greater sandhill crane proper initially suffered most; by 1940, probably fewer than 1,000 birds remained. Populations have since increased greatly again. At nearly 100,000, they are still fewer than the lesser sandhill crane, which, at about 400,000 individuals, is the most plentiful crane alive today.