Page:American Journal of Psychology Volume 21.djvu/27

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INTELLIGENCE AND IMITATION IN BIRDS
17

Fig. 6

The female English Sparrow of Figs. 1-5. Strings now changed to Place 2. She used the beak here also. See Table II or the text for the readiness with which this change was made.

Fig. 7

Strings are shown in Place 3. See Table II or text for the way in which she learned this.

cerned, this series then, is almost perfect. Practically the same may be said of her behavior with respect to the remaining two changes,—"strings to left end at rear side" and "strings to rear side at right corner." There are no errors at all in the last series and the errors in the second trial of the last series but one are almost certainly due to the fact that she had something wrong with one foot.

Journal–2