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Practice Listening: Highlight Incorrect Words ID: #33710 Short Bird Buffet
Instructions
* Click on the words that are different from what you hear
Result:
If you've ever been to an all-you-can-eat buffet, you know how important it is to carefully weigh your options. You don't want to fill up on salad when so many calorie-laden delights await. It seems some birds also weigh their mealtime choices—literally. Foods that hide their edible bits on the inside present a challenge to hungry diners. How can you tell which fruits are ripe or which shells harbor the biggest nuts? We humans knock on melons or squeeze avocados. But how do other species select the highest quality snacks? To find out how the jays do it, researchers fiddled with their feed. First they doctored peanuts so that some contained three nuts while others had none. When they offered these pods to some jays, the birds turned their beaks up at the empty shells and instead chose those that were full.

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