I've seen that behavior in the Great Blues before--up in Sherburne NWR. It was the middle of a very bright, sunny, summer day. I wasn't sure if it helped the bird see its prey, or the larger shadow deceived the prey as to the bird's shape and impending spear-action. Linda Whyte
On Fri, Jul 24, 2009 at 4:11 PM, dan&erika<[email protected]> wrote: > Hi All-- > > I birded Circle Lake in Rice Co. and found a Great Blue Heron using its > wings to shadow the water as it fed. > > http://picasaweb.google.com/danerika/RiceCoBirding#5362129492569596546 > > > I have not seen this behavior in this species before and it is not mentioned > in Butler, Robert W. 1992. Great Blue Heron (Ardea herodias), The Birds of > North America Online (A. Poole, Ed.). Ithaca: Cornell Lab of Ornithology; > Retrieved from the Birds of North America Online: > http://bna.birds.cornell.edu.bnaproxy.birds.cornell.edu/bna/species/025.<http://bna.birds.cornell.edu.bnaproxy.birds.cornell.edu/bna/species/025> > > Perhaps I have not watched Great Blues for enough time! > > The only other bird of interest was what I presume to be a Vesper Sparrow > singing from a bluebird box. > > http://picasaweb.google.com/danerika/RiceCoBirding#5362134322758263906 > > dan > -- > Dan or Erika Tallman > Northfield, Minnesota > http://danerika.googlepages.com/home > http://picasaweb.google.com/danerika > [email protected] > > ".... the best shod travel with wet feet" > "Beware of all enterprises that require new clothes ...."--Thoreau > > ---- > Join or Leave mou-net:http://lists.umn.edu/cgi-bin/wa?SUBED1=mou-net > Archives:http://lists.umn.edu/archives/mou-net.html > ---- Join or Leave mou-net:http://lists.umn.edu/cgi-bin/wa?SUBED1=mou-net Archives:http://lists.umn.edu/archives/mou-net.html
