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 May, 1916 THE SHADOW-BOXING OF PIPILO 97 covering it, but that instinct should be strong enough to bring it day.after day for so protracted a time, is beyond comprehension. It, of course, never oc- curred to us that the experience would be repeated. Imagine every one's sur- prise, then, to have an Anthony Towhee show up bright and early one morning at the same pane in the early spring of 1915. He went immediately to work attacking the reflection with all the vigor of his recouped forces; for chance points to its being the same bird. Remembering the aggravations of the year before, General Penney tacked mosquito netting over the lower half of the pane, but the bird was not to be so easily discouraged. Next morning he was fighting as busily as ever, having merely transferred his interest and perch to the upper, or uncovered, portion of the window. Next the netting was tacked over the whole frame, but almost immediately Fig. 1. BETWEEN BOUTS AT THE GARAGE WINDOW THIS BIRD BOSSED OUR FEEDING STATION ASOLUTELY. the bird peeked a hole through the netting in his savage search for that enemy. In spite of the eraroped quarters between the netting and the glass, the bird made himself as objectionable as before, so as a last resort a wire screen was substituted for the netting. This proved entirely effective from the first. Pip- ilo recognized defeat and went his way. After a month or so, therefore, the screen was removed, but within two days he was back on the job. Next morn- ing the screen was back on the window, and there it stayed until July of last year,'when it was removed with impunity because of the passing of the nesting season. This spring for the third consecutive year a bird returned to the same spot with the same intent, but the cure had at last been found. The screen was