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nathless    
ad. 虽然如此;但是

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  • How Many Species Can We Find Before They Disappear Forever?
    The Anguilla Bank skink, a Caribbean species discovered along with 23 others in 2012, is vulnerable to extinction Karl Questel One night in June 2012, an entomologist named Piotr Naskrecki was
  • List of largest birds - Wikipedia
    The following table is a list of the heaviest extant bird species based on maximum reported or reliable mass, with the average weight is also given for comparison These species are almost all flightless, having denser bones and heavier bodies Flightless birds comprise less than 1% of all extant bird species
  • World Record Birder - Ornithology
    Leading world lister Tom Gullick became the first person ever to see 9,000 bird species in 2012 when he saw the endemic Wallace’s Fruit-Dove in the Tanimbar Islands, Indonesia He saw 9,047 species on a bird tour there Britisher Tom Gullick, 81, has been the top world lister since 2008 and has been birding for 40 years For years the field was led by Phoebe Snetsinger, who avidly birded
  • Ecology Communities and Species Bio. Test 2 Flashcards
    Study with Quizlet and memorize flashcards containing terms like Although most biologists believe that many species are becoming extinct each year because of the activities of humans, relatively few species actually appear on compiled lists of extinct species What is one reason why so few species are listed as extinct? A) Many species are unknown to science and go extinct before they've been
  • 3 Billion Birds Gone - American Bird Conservancy
    The researchers analyzed birds on a group-by-group basis, allowing them to identify declines among species that use similar habitats The findings included 48 years of data from multiple independent sources, including the North American Breeding Bird Survey and the Christmas Bird Count
  • Weekly Abundance Maps - eBird Science
    With abundance results spanning the entire annual cycle of a bird, the team showed where additional lands need to be protected to achieve conservation of at least 30% of the population The team also found that conservation can be achieved at a lower cost by including areas with shared human uses such as agricultural landscapes in conservation
  • Hummingbird - Wikipedia
    (For an alphabetic species list, see List of hummingbird species) Hummingbirds are birds native to the Americas and comprise the biological family Trochilidae With approximately 366 species and 113 genera , [ 1 ] they occur from Alaska to Tierra del Fuego , but most species are found in Central and South America [ 2 ]





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