White-breasted nuthatch
Bluebird at entrance of nesting-box
It must not be forgotten that large city parks are among the best places for observing birds. As an example of what can be accomplished, even with limited opportunities, there was a boy who happened to know where some owls roosted. {94} Now all owls swallow their prey whole, and in digesting this food they disgorge the skulls, bones, fur, and feathers in the form of hard dry pellets. This boy used to go out on Saturday or Sunday afternoon and bring home his pockets full of pellets, and then in the evening he would break them apart. In this way he learned exactly what the owls had been eating (without killing them) and he even discovered the skulls of certain field mice that naturalists had never known existed in that region. He let the owl be his collector.
Patrol Work
It is a good idea to keep at patrol headquarters a large sheet on the wall, where a list of the year's bird observations can be tabulated. Each time a new bird is seen, its name is added, together with the initial of the observer, and after that its various occurrences are noted opposite its name. The keenest eyed scouts are those whose initials appear most frequently in the table. In addition, the tables will show the appearance and relative abundance of birds in a given locality. For patrols of young boys, a plan of tacking up a colored picture of each bird, as soon as it is thoroughly known, has been found very successful, and the result provides a way to decorate the headquarters.
Such pictures can be obtained very cheaply from the Perry Pictures Co., Boston, Mass., or the National Association of Audubon Societies, 1974 Broadway, New York City.
MOLLUSCA--Shells and Shellfish
By Dr. William Healey Dall, of the United States Geological Survey
Fig. 1
White lipped snail (Polygyra albolabris)