# Birds

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Category: Nature
Slides: 32
Updated: 2026-05-15T22:18:56.868Z
Tags: nature, birds

## Summary

Birds are dinosaurs. Not like dinosaurs, not descended from something dinosaur-adjacent. They are theropod dinosaurs, the surviving sister-line of Tyrannosaurus and Velociraptor , equipped with feathers their ancestors had already evolved before flight. Key sections include: Birds.; Opening The dinosaurs that lived.; Chapter I Avian evolution.; Chapter II Two great divisions.; Chapter III Worth knowing.; Chapter IV Migration: how it's studied.; Chapter V Magnetic-field navigation.; Chapter VI Pole to pole.; Chapter VII Songbird vocal learning.; Chapter VIII Inside the singing brain..

## Slide Outline

1. Birds.
2. Opening The dinosaurs that lived.
3. Chapter I Avian evolution.
4. Chapter II Two great divisions.
5. Chapter III Worth knowing.
6. Chapter IV Migration: how it's studied.
7. Chapter V Magnetic-field navigation.
8. Chapter VI Pole to pole.
9. Chapter VII Songbird vocal learning.
10. Chapter VIII Inside the singing brain.
11. Chapter IX Crows, ravens, intelligence.
12. Chapter X Pepperberg & Alex.
13. Chapter XI Sex differences and display.
14. Chapter XII Mating systems.
15. Chapter XIII The cuckoo problem.
16. Chapter XIV The flightless lineage.
17. Chapter XV The dodo and extinction.
18. Chapter XVI Ratites.
19. Chapter XVII Penguins.
20. Chapter XVIII Falconry.
21. Chapter XIX Audubon and bird illustration.
22. Chapter XX The Cornell Lab.
23. Chapter XXI Citizen science.
24. Chapter XXII How to identify.
25. Chapter XXIII The North American decline.
26. Chapter XXIV Glass, cats, coffee.
27. Chapter XXV The Big Year.
28. Chapter XXVI Twenty essentials.
29. Chapter XXVII Watch & read.
30. Chapter XXVIII Why this matters.
31. Chapter XXIX How to begin.
32. The end of the deck.

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