Robins aren’t afraid, now and then, to tap at the window; doves have considerably less need to do that. In fact, they will, under certain circumstances, go right through!. Show the audience a large solid Perspex frame and draw attention to the fact that it has no openings in it. Put it in a stand and and note that there is a small trapdoor on both sides of the sheet of Perspex. Next, have a dove crawl through the sheet via these trapdoors. The audience sees that the small animal does this with surprising ease.
Visually very impressive, ingeniously simple and irresistibly attractive. The frame is made of plastic coated wood; size: 60 x 42 cm.
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