geeked about beaks

Geeked

About Beaks

Beak adaptations to food sources

Selection can lead to adaptation

Survivaland

Reproduction

Beak Size

Selection can lead to adaptation

Survivaland

Reproduction

Beak Size

Selection can lead to adaptation

Survivaland

Reproduction

Beak Size

Selection can lead to adaptation

Survivaland

Reproduction

Beak Size

Selection can lead to adaptation

Survivaland

Reproduction

Beak Size

Different kinds of selection

Disruptive selection New Species?

Survivaland

Reproduction

Beak Size

Example of disruptive selection

African fire-bellied seed-cracker finch

Can open tough shells of large seeds

Better at handling small seeds

Example of disruptive selection

Pocket micein

New Mexico

Example of disruptive selection

Pocket mice in New Mexico

Example of disruptive selection

Magnified 100x

Gill rakers trap food that enter a fish’s mouth so the fish can eat it

Short gill rakers are good for big food

Long gill rakers are good for tiny food

Blood worms

Plankton

Stickleback fish in Canada