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Eldon Greij is a biologist and a lifelong educator and the Founding Editor of Birder's World. His popular column "Amazing Birds" appears in every issue of the magazine.
Read more about Eldon Greij |
Not every bird relies on its own body heat to keep its eggs warm
By Eldon Greij
Published: June 25, 2010 |
How hummingbirds choose flowers is just one of many reasons the tiny sprites are so fascinating
By Eldon Greij
Published: April 23, 2010 |
How ingenious internal clocks help birds anticipate critical life events
By Eldon Greij
Published: February 19, 2010 |
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How warming seas are threatening the most recognizable and loveable birds in the world
By Eldon Greij
Published: December 28, 2009 |
 | Why the songs of Northern Cardinals and Wood Thrushes are as amazing as they are beautiful By Eldon Greij
Published: October 23, 2009 |
Almost always, female birds of prey are larger than their mates, but why? By Eldon Greij
Published: August 21, 2009 |
The amazing ways birds breathe, process food, and conserve water are matched only by their astounding behavior By Eldon Greij
Published: June 19, 2009 |
When the heat is on, Killdeer and sandgrouse put their feathers to a novel use - as sponges By Eldon Greij
Published: April 24, 2009 |
Most birds construct nests for one simple reason, but that doesn't mean they build only one type of nest By Eldon Greij
Published: February 20, 2009 |
How science is revealing the incredible migrations of the Arctic Tern, Sooty Shearwater, and Bar-tailed Godwit By Eldon Greij
Published: December 26, 2008 |
Hold the bird seed! These birds want wasps, blood, beeswax, clay, and bones By Eldon Greij
Published: November 1, 2008 |
What every birdwatcher needs to know to understand our best-known and most charismatic birds By Eldon Greij
Published: September 1, 2008 |
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