What states have established a Bird Day by law?
Is woman cruel or only thoughtless?
Do robins raise more than one brood in a season? If so, do they use the same nest twice? If they raise two broods, what becomes of the first, while the mother is sitting upon the eggs for the second?
Watch for a robin leading out his family. Notice the feeding, after the birds are large enough to run and fly fairly well. The young birds are placed apart, and kept apart by the parent, who visits each one in turn, and rebukes any who tries to be piggish, sometimes rapping it with his bill when it runs out of turn. Notice this parent teaching the young to sing. It is a very interesting sight.
What birds have you heard sing at night?
More birds sing at night than is commonly supposed. The female robin calls to her mate frequently during the night, and he responds with a song. The catbird also sings at night. Last May one was heard to sing three nights in succession from eleven o'clock until daylight in response to little complaining calls from his mate. The song sparrow, warblers, and many other birds sing at night. Their songs at these times sound as if the bird were sleepy and reluctant to sing, or as if he were startled and were hurrying through the performance. Make a note of songs heard at night and try to determine the cause. Learn to distinguish the call of the female from the song of the male.
The kinds of nests.—What birds are weavers? What ones are masons or plasterers? What ones are tailors, in the construction of their nests?
Find a pair of birds engaged in nest building; robins may generally be found. Learn to distinguish the male from the female in appearance, as well as voice. Notice what materials they are using. Which bird takes the lead in building? What does the other bird do? Does he ever carry material, or does he simply act as escort? Does he ever protect his mate from other birds?
Write this out, carefully drawing your conclusions from your own observations. After the young birds have left the nest and have no further use for it, you may take the nest and examine it closely. You will find that while there is a similarity in the nests of the same kind of birds, they differ considerably in the materials of which they are composed. For example, the typical robin's nest consists of straws and hairs plastered together with mud and lined with some soft material, but others have been found made entirely of raveled rope; others of carpet rags. The bird evidently is not guided in this matter by blind instinct, but uses its reason in adapting materials that are at hand.
If you are fortunate you may find a pair of orioles building their nest. Place some bright-colored yarn or string in pieces of convenient length where the birds will see them. Some of them are almost sure to be woven into the nest. The oriole's nest may be attached to a limb by two or more cords; if it is, notice how it is prevented from swinging by side ropes. You will find it guyed against the prevailing winds. The oriole frequently ties several twigs together, and so uses these to suspend his nest. Notice the nest pouch; those built near houses are quite shallow; those near forests are much deeper. Can you tell why?