Science and Innovation

Louis Agassiz Fuertes (artist, 1874-1927) / Bird Lore, 1926

From rodents to bats, many mammals that live in cold climates make it through the lean days of winter by hibernating without food. They find a safe place to rest, lower their body temperature and breathing rate, and wait for milder conditions. Most birds that rely on an insect diet, on the other hand, head south.

But the open mesas and canyons of the American Southwest are home to an odd exception. It’s the common poorwill, a highly camouflaged insect-eater no more than seven inches long.

Over the past hundred years, people have introduced dozens of non-native fish species into the Colorado River and its tributaries. During that time, populations of native fish species have dropped, in some cases dramatically. It’s easy to guess at the causes of native species decline, like predation and competition for food. But it’s far more difficult to prove.

NPS Photo

In the depths of the Great Depression, the nation’s unemployment stood at 25 percent. With people hungry and desperate for jobs, President Franklin Roosevelt signed a law in March 1933 creating the Civilian Conservation Corps. The CCC gave jobs to single men 18 to 25 years old, with most of their thirty-dollar-a-month paychecks returned to their families.

Don Usner/The Trust for Public Land

Fewer than five percent of the more than 550 U.S. wildlife refuges are located in urban areas. In New Mexico, another is joining the list as the former Price’s Dairy near downtown Albuquerque is slated to become the Middle Rio Grande Wildlife Refuge. At almost 600 acres and only five miles from downtown, it is the largest farm left in a metropolitan area now home to nearly one million people.

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