photographs by Douglas Herr
Acorn Woodpecker (Melanerpes formicivorus)


Biology

The Acorn Woodpecker is best known for its habit of storing acorns in holes drilled for that purpose. A resident of western open oak and pine/oak forests from southern Oregon south through California, and in Arizona, New Mexico, western Texas, and in the tropics farther south. This species nests and maintains acorn storage locations colonially. Nest are typically holes in dead oak branches.

Food sources include insects, acorns, sap and fruit. Insects are often caught on the wing, flycatcher-style.


Photographic notes

This female Acorn Woodpecker has just successfully driven a California Ground Squirrel away from its acorn storage tree.

Camera: Nikon FTN
Lens: 500mm f/8 Reflex-Nikkor
Film: Kodachrome 64
Exposure: not recorded
Support: tripod folded to use as monopod
Date: 1976
Location: Sunol Regional Wilderness, Alameda County California

This male has dipped his bill into the pond (background) and is letting the water run down his throat. In the original photograph there was too little space on the left side so I added a slice from a subsequent exposure. I also toned down the bright spot of sunlight in the lower left corner.

Camera: Leica R8 with Leica Digital Module-R at ISO 400
Lens: Leitz 560mm f/6.8 Telyt-R with extension tube
Exposure: 1/250 sec @ f/6.8
Support: shoulder stock and monopod
Date: 20 April 2008
Location: Ancil Hoffman county park, Sacramento County California


Text and photographs Copyright (C) 1976 - 2008 Douglas Herr
last updated 29 April 2008