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.
Post A Comment
Did You Know?
At the east end of El Portal, just west of Yosemite National Park’s boundary, changing river gradients, glacial history, and powerful floods have created a boulder bar with boulders much larger than typically found in such deposits. This is no ordinary boulder bar, however, for it contains massive boulders over a meter in diameter and weighing many tons.