Why Birds Have No Teeth

concepts · 9

1. 01

   Birds And Their Food

   Establish the chapter's one big rule: the shape of a bird's beak and claws follows the food it eats.

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2. 02

   Beaks That Crush And Tear

   Tell apart the three beak shapes for hard seeds, for nuts and fruits, and for flesh.

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3. 03

   Beaks That Chisel And Probe

   Know the two beak shapes for reaching food that is hidden, inside wood and inside flowers or holes.

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4. 04

   Beaks That Sift And Stick

   Finish the seven beak types with the two strangest, one that strains mud and one that is sticky inside.

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5. 05

   Claws And Birds Of Prey

   Open the second half of the chapter: what a claw is, what it is used for, and the first of the six kinds.

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6. 06

   Perching And Swimming Birds

   Compare feet built to grip a branch with feet built to push water.

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7. 07

   Wading And Scratching Birds

   Compare feet that keep a bird on top of mud with feet that dig into the ground.

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8. 08

   Climbing Birds And Bird Watchers

   Finish the six claw types and close the chapter with the idea that beak and foot both follow the bird's way of living.

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9. 09

   Chapter Review: Beaks And Claws

   Hold seven beak types and six claw types apart, and answer the chapter's written questions.

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