Printouts Click on a region in the picture to color it in with the selected color. Click on a color swatch in the palette to select a new color. The currently selected color in the palette is indicated by a black rectangle drawn around it. When you click, the point that you're clicking on is at the tip of the arrow or the tip of the pointing finger. Birds have a lightweight skeleton.
Birds have a smaller total number of bones than mammals or reptiles.
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