814 He then posed for the benefit of the magpies, who are now back in the large cage, and tried to get through the wire to them, at a point where I formerly had a door for him to use. He then looked about, still in the cage, and saw a young mocking-bird (a bird of the year, born at Niles).in the section adjoining. He climbed up the wire to have a better look at him, then started to walk out slowly. He saw himself in the mirror and looked deliberately at his reflection with- out evident excitement. He examined himself and touched his image with his bill, then came out and looked into the cage behind the mirror, where the mirror was leaning up against the wire, then return- ed to the cage. That was the beginning of his downfall. The mirror fascinated him and he could not leave it for more than a few seconds at a time. He spread his wings, cocked his tail up vertically-- widely spread and devoted himself to single-minded interest in his reflection, tapping the glass, at first gently then harder. Several times he resolved to shake off the spell and clear out, but each time as he turned to walk away, so did the other bird, and he immediately began all over again. He could not get by the mirror! This kept up for about 10 minutes before I decided that he was "trapped" indefinitely and would probably still be at it if I got the motion picture camera. Such proved to be the case. I got 57½ feet of film. Unfortunately some of it was exposed with too large a diaphragm, owing to my overlooking to reset the stop,after focusing, to the proper opening, in my excitement. Rhody continued to get more and more excited. This was heightened- ed by his inability to "escape". He tried many times to walk by the mirror, but each time, when he caught his reflection again, was back at it like a flash. He began to boo and rattle his beak, so after exactly 33 minutes, to save him from apoplexy, I removed the mirror. He came out rather hurriedly without a glance at the place where the mirror had been, but calmed down almost immediately and rested nearby