By "rushing" through the water, the Ruddy Duck traps air under his breast feathers. Then in the bubble display, he slaps these feathers to form bubbles that are very attractive to females as is his shocking blue bill!
By "rushing" through the water, the Ruddy Duck traps air under his breast feathers. Then in the bubble display, he slaps these feathers to form bubbles that are very attractive to females as is his shocking blue bill!
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