The Elkhorn Slough National Estuarine Research Reserve has a group of dedicated volunteers who (among other things) work hard monitoring the health of the slough. One of the bird monitoring programs at the Reserve checks on the health of nesting raptors.

Three Great Horned Owlets at ESNERR

This photo of three Great Horned Owlets was taken by Reserve docent Shirley Murphy on 4/14/08 using a digiscope with a Nikon ED scope and Nikon Coolpix P4.