Grasshopper in Song
This is Grasshopper, one of last year's Cam babies, at the top of the playpen, in full song - see how his throat is distended? This is a typical posture for a songster - it helps make the sound of his song carry further, and allows him to modulate the tones produced by his double syrinx. In effect, the canary has two voice boxes, and so can harmonize with himself!
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