Shuttled over to the Village, like, around two!...found Pine Siskin by the Post Office that looked to have collided with Window...paddled back to Bobcat Meadow....sighted Lark Sparrow beside the Road just across from the Shuttle Stop...sat on a Boulder there for a long while taking pics...Black Birds came around...Redwing too...Buzz Bird over the Meadow...returned to the Cabin and napped...sunny blueblue hot.....out to Ozone Beach in the Evening....sat on Ozone Boulder and took my Boots off...and waded the Diversion Channel....Deer by Cottonwood Bend...pic..oh...forgot to post clip!...hmmph....for sometime...sat awhile at Cottonwood Bend...put Boots back on...Sandpiper, Black Bird with Worm...pics...made the Inside Loop counterclockwise...sat awhile at Heron Point...quiet...Song Sparrow....Boot routine again to cross the Diversion Channel!...ouchouchouch--River Gravel!.....Sparrow is new sighting, for me, sorta..Sparrow looks like Sparrows I've seen about Drive Up Fast Foods...but I count new sightings, for me, in Valley as 'new'!....
The census-taker is struck by the variation in his records from hour to hour during the day, irrespective of kind of territory covered and of his own degree of alertness. This fluctuation is due in large part to the fact that there are two daily periods of marked activity on the part of birds, namely, in the early morning, within an hour or so after sunrise, and in the late afternoon, about two hours before sunset. Of these two periods, that in the morning is the most impressive; in other words the observer, by selecting the earlier hours for his census-walk, will make the highest score and also the most representative one. It is quickly apparent that in comparing the enumerations for different days and for different localities allowance should be made for this daily double fluctuation in the visibility and audibility of birds.
It is the earnest recommendation of the authors that observers in a position to do so will get into the habit of taking bird censuses. The method here advocated is a practicable one; we believe it can be adopted to advantage by anyone possessed of a fair acquaintance with bird species. A 'collection' of census records will afford basis for much future satisfaction. On the one hand, is the pleasure of recalling to mind pleasant days afield spent among the most attractive things in nature; and on the other hand is the intellectual enjoyment derived from comparing bird populations in kind and size from place to place and season to season, and from endeavoring to account for the fluctuations which are shown, on the basis of all the factors known to control the birds' existence.
CENSUSES OF BIRDS IN THE YOSEMITE SECTION
http://www.nps.gov/history/history/online_books/grpo/census.htm
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