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Educators… These teaching slides were created by the BirdSleuth K-12 team. We welcome you to share these slides with your students! You may edit this file, but please do not distribute this file (neither original or edited versions).

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slide1

Educators…

  • These teaching slides were created by the BirdSleuth K-12 team. We welcome you to share these slides with your students! You may edit this file, but please do not distribute this file (neither original or edited versions).
  • Other resources pertaining to this content can be found at: www.birdsleuth.org/webinar-series/migration.
  • Need help or have questions? Please contact BirdSleuth at birdsleuth@cornell.edu or consult the BirdSleuth website at www.birdsleuth.org. Join BirdSleuth on our social networks at:
    • Facebook: https://www.facebook.com/pages/BirdSleuth/40097433976
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    • Pinterest: http://pinterest.com/birdsleuth/boards/
                  • Version 2.0 July 17,2014
what is migration
What is migration?
  • Migration is the large-scale annual movement of all or some of a population between breeding (summer) and non-breeding (wintering) grounds
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American Robin

Red-winged Blackbird

Yellow Warbler

House Wren

Killdeer

American Goldfinch

Cedar Waxwing

diverse strategies
Diverse Strategies
  • Residents
    • Temperate
    • Tropical
  • Migrants
  • Partial Migrants

Short-distance

Medium-distance

Long-distance

partial migrants
Partial Migrants
  • In some species, some populations migrate while others don’t
  • Can depend on:
    • Food availability
    • Location
do all bird species migrate
Do all bird species migrate?

No, some species don’t migrate at all

Yeah, we don’t either!

Not us Chickadees!

yellow warbler
Yellow Warbler

Long-distance Migrants

migration pros and cons
Migration Pros and Cons

Migration sounds scary! I’ll stay here.

Winter’s a drag. I’m heading to find some insects!

  • Pros:
    • Escape the harsh winter
    • Better chances of finding food during the winter
  • Cons:
    • Migration is dangerous
    • Resident birds get first pick of nest sites
why do any birds migrate
Why do any birds migrate?
  • Natural selection favors traits that help an organism survive and reproduce.
  • There’s more than one way to success.
  • Different birds have different strategies.

reproduction

survival

they need food
They need food!
  • Winter: Food is scarce in much of North America, and abundant in the tropics
  • Summer: A bountiful feast of insects in North America—especially important for feeding young