From The First Reading Book by Mark Wilson (London: Sampson Low, Son, and Co., 1862), pages 97-98:

LESSON VI,
THE ROBIN.

Did you ever hear the robins sing in the morning, when you were in bed? The robin sings very early, almost as soon as it is light.

When the robin sings so early in the morning, it is very happy; and it seems to say, "Up, up, and be happy with me." I will tell you what a little girl told me about a robin that came to her window, and sung very early one morning.

There came to my window,
    One morning in spring,
A sweet little robin;
    He came there to sing;
And the tune that he sung
    Was prettier far
Than ever I heard
    On a flute or guitar.

He raised his light wings
    To soar far away,
Then resting a moment,
    Seemed sweetly to say,
"O happy, how happy,
    This world seems to be!
Up, up, little girl,
    And be happy with me."