ternoon? Or, if you live in a comparatively quiet neighborhood, even
in a large city, go out at night and listen for bird sounds in the
air. You need not go far to make this trial--your own back door "opens
into all outdoors."

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