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The loggerhead shrike (Lanius ludovicianus) is a passerine bird in the family Laniidae. It is the only member of the shrike family endemic to North America ; the related northern shrike ( L. borealis ) occurs north of its range, however it is also found in Siberia.
In 1977, the San Clemente loggerhead shrike was listed as endangered by the United States government, with an estimated population of 50. [2] Between 1982 and 1999, the bird's population was measured between 14 and 33 birds, bottoming out in January 1998. [10] [9] The removal of feral goats and sheep was completed in 1993. [9]
According to the International Union for Conservation of Nature (IUCN), 77 bird species in the United States are threatened with extinction. [1] The IUCN has classified each of these species into one of three conservation statuses: vulnerable VU, endangered EN, and critically endangered CR (v. 2013.2, the data is current as of March 5, 2014 [1]).
When conservation efforts began on Cyprus in 1978 there were just 300 turtle nests -- the population has grew to around 1,100 nests last year.
The List of Wildlife Species at Risk currently has more than 800 entries for Canadian wild life species considered vulnerable; including 363 classified as endangered species, —190 threatened species, —235 special concern, and 22 extirpated (no longer found in the wild). [1]
The species — several birds, mussels, two species of fish and the Little Mariana fruit bat last seen in Guam in 1968 — have been listed as endangered for decades, according to the U.S. Fish ...
Birds are also threatened by high rise buildings, communications towers, and other human-related activities and structures; estimates vary from about 3.5 to 975 million birds a year in the North America alone. [18] The largest source of human-related bird death is due to glass windows, which kill 100–900 million birds a year.
Monarch butterflies can fly dozens of miles in a day.They are an astonishing and intrepid species in North America. But in some places, populations of the migratory monarch butterfly, an iconic ...