Over the last 100 years, the state’s migratory bird populations have declined due to loss of habitat. Here at the Calaveras Dam Replacement Project, our teams make great strides to protect the population of our migratory birds.
Nesting season generally falls between February 15th to August 15th for most species. Our Environmental team performs focused surveys for active nests prior to the start of construction activity. The staff survey for active nests of migratory birds and protected raptors, such as the Bald Eagle.
Bird nesting deterrents such as reflective signs are also placed near or on construction equipment to prevent birds from nesting near work. When active nests are found, our teams immediately place disturbance-free buffers around the active nest until the young have fledged successfully. This year, a Bald Eagle pair successfully produced eagle chicks away from the Calaveras Dam project site at the nearby PG&E tower.
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Our Bald Eagle nest at the PG&E tower
Some bird species, such as the Black Phoebe shown above, nest on construction equipment. The equipment was monitored and remained unused until the nestlings fledged.
Photos courtesy of Bill Stagnaro & Cullen Wilkerson, Calaveras Dam Project Environmental Team