Wildlife and Other Sightings: Golden Digger Wasps & Feathers
August 04, 2012
Golden Digger Wasp
Keep an eye out for feathers on the trail as the birds of Yosemite are replacing their flight feathers this time of year. This process is called molting and it allows the birds to replace damaged or worn feathers. Although birds molt every year, not all feathers are replaced at once and some species take several years to replace their full set. This pattern of old and new feathers is a handy way for researchers to estimate the age of a bird.
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Did You Know?
In Yosemite Valley, dropping over 594-foot Nevada Fall and then 317-foot Vernal Fall, the Merced River creates what is known as the “Giant Staircase.” Such exemplary stair-step river morphology is characterized by a large variability in river movement and flow, from quiet pools to the dramatic drops of the waterfalls themselves.