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Migration of Birds. Report from Middle Creek Wildlife Area March 8, 2005 Snow Geese 115,000 - 120,000 Tundra Swans 4,100 - 4,300 Canada Geese 1,200. Great Gray Owl invasion of Wisconsin and Minnesota in winter of 2004-05. They’re Back !. Swallows Returning to Capistrano?

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Presentation Transcript
slide2

Report from Middle Creek Wildlife Area

March 8, 2005

Snow Geese 115,000 - 120,000

Tundra Swans 4,100 - 4,300

Canada Geese 1,200

slide6

Swallows Returning to Capistrano?

How About the Buzzards of Hinckley, Ohio?

March 20, 2005

slide7

Migration:

The regular, recurrent, seasonal movement of populations from one location to another and back again.

early ideas about migration
Early Ideas About Migration
  • Jeremiah (8:7): “The stork in the heavens knoweth her appointed time; and the turtledove, and the crane, and the swallow, observe the time of their coming.”
  • Aristotle: hid in hollow trees or in muddy marshes.
  • Fishermen pulled nets to find fish and hibernating swallows.
  • Flew to the moon!
  • Hummingbirds ride on the backs of geese!
fast facts test your knowledge
Fast Facts: Test Your Knowledge!
  • True or False: No land species nesting in the south temperate zone migrates into the north.
  • Who migrates the farthest?
  • the highest?
  • the highest?
who flies the highest
Who Flies the Highest?

Barnacle Geese fly over the Himalayan Mountains at over 29,000 feet!

who flies the fastest
Who Flies the Fastest?

Semipalmated Sandpiper:

3000 miles in 3 days!

why migrate
The Pro’s

?

The Con’s

DANGEROUS!

DANGEROUS!!

DANGEROUS!!!

Going to unknown area (hiding places, food sources, etc.)

Already inhabited with competitors

Why Migrate?
slide21

One half million Sandhill Cranes stage at the Platte River, NE in March.

“One of the 10 great birding spectacles in North America . . .” Roger Tory Peterson

how do they know when it s time
How Do They Know When It’s Time?
  • Need a reliable cue . . .
    • Weather?
      • Temperature
    • Change in daylength (photoperiod)
slide23

Get to the breeding grounds at the same time as maximum food supply for young appears.

Black & White Warbler at nest.

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