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  • How did Apollo deal with the Van Allen radiation belts - YouTube
    One of the most hotly contested procedures during the Apollo missions was the how NASA dealt with the issue of the Van Allen belts, the naturally occurring b
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    But possibly the best non-human tool users are, perhaps surprisingly, to be found in species without a neocortex: birds Emery and Clayton (2009) and Seed and Byrne (2010) give examples of a number of bird species with impressive tool-using and problem-solving abilities, including crows, jays and finches
  • Building Collisions Are a Greater Danger for Some Birds Than . . .
    These fatalities account for 2 to 9 percent of all birds in North America in any given year, making building strikes second only to feral and free-roaming cats as a source of human-caused avian mortality in the United States A wide range of species, from hummingbirds to raptors, are susceptible to these deadly collisions, but the losses are
  • Hummingbird Ecology | Ask A Biologist
    The smallest weighs less than a United States penny The largest would weigh little more than a pile of ten pennies Hummingbirds also come in many colors and patterns But not every species of hummingbird is colorful, and even among the most colorful species, females are usually plain green or brown Visit a Virtual Hummingbird Feeder
  • Secret of the birds: nearly 300 species fool foes the same way
    A surprising number of bird species — at least 285 belonging to 52 families — playact being injured to protect their nests 1 Some nesting birds, when startled by potential threats, move away
  • New Study Finds U. S. and Canada Have Lost More Than One in . . .
    A study published today in the journal Science reveals that since 1970, bird populations in the United States and Canada have declined by 29 percent, or almost 3 billion birds, signaling a widespread ecological crisis The results show tremendous losses across diverse groups of birds and habitats — from iconic songsters such as meadowlarks to
  • Bird vocalization - Wikipedia
    Birds communicate alarm through vocalizations and movements that are specific to the threat, and bird alarms can be understood by other animal species, including other birds, in order to identify and protect against the specific threat [27] Mobbing calls are used to recruit individuals in an area where an owl or other predator may be present





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