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Golden Eagles

by David Liebmann

Invisible superhighways. That’s one way to describe the rising air currents that will whisk raptors through central Pennsylvania during this season’s migration. Golden Eagles, attuned to the subtle relationships between topography and wind, will scan our state’s prominent ridges and deep valleys as they soar southward as they have for millennia. Golden Eagles are vaguely …

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The Hummingbird is a Powerhouse

by David Liebmann
Endurance athlete, feather-weight fighter, acrobat: all describe the Ruby-throated Hummingbird, smallest member of eastern North America’s avifauna and the only hummer to breed in western Pennsylvania. If you could hold one of these tiny birds to your ear, you’d hear a heart beating 250 times a minute—at rest. That rate rockets to some 1,200 beats …

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On Warblers

by David Liebmann
Spring begins with song, the dawn chorus warming up with a few notes in March and growing into full avian voice by May. Some of our best singers are the wood warblers, migratory songbirds, typically weighing under half an ounce, that winter from South America to the Caribbean and return northward to mate, nest, and raise …

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A Different Kind of Hunt

by David Liebmann
The Christmas hunt was long a holiday tradition. Armed with rifles and shotguns, Christmas guests would choose teams for a “side hunt” and fan out over field, woodland and riverbank. Winners bagged the largest number of birds. In 1900, a new tradition began in response to America’s nascent conservation movement. Birds would remain the quarry, …

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