Why Migrate? Food availability Weather Mating So where to? Many birds follow migration corridors...
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Transcript of Why Migrate? Food availability Weather Mating So where to? Many birds follow migration corridors...
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Migration Patterns and Purpose
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Why Migrate?Food availability
Weather
Mating
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So where to?Many birds follow
migration corridors called flyways
Following important habitat features; food water etc.
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Wintering GroundsThe place where a
migratory bird spends the winter
Important places throughout the US include South Texas, Louisiana marshes South Florida
As far south as Central and South America
Canada Warbler
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Why Band a Bird?
Tells scientists several things about different populations
Where birds go
How they get there
How long they live
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Measurements TakenWing Chord (shoulder to tip)
Tail Length
Sex
Age
Species
Weight
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Data CollectionUSGS Bird Banding Laboratory, Patuxent
Maryland
Place where all information is stored
Every bird banded in North America has an entry in the banding labs database
Info about a recaptured bird can be looked up in database
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Migratory Bird LawsMigratory bird treaty act of 1918
Partnership between The United States, Mexico, Russia, The United Kingdom (Canada), and Japan
Federally protects nearly every aspect of a migratory birds life
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Migratory Bird Laws cont.Prohibited actions under Migratory Bird
Treaty Act
Harass, kill, capture, move, sell, buy, possess, any migratory bird or part of a migratory bird including nests and feathers.
Unless authorized by the Department of the Interior, hunting seasons, permits to possess etc.
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Photo CreditsSnow Geese: http://tripcart.typepad.com/tripcart_the_blog/potd/page/2/
Flyways One: http://dnr.wi.gov/org/land/wildlife/hunt/waterfow/process.htm
Winter: http://www.vdberk.co.uk/winterhardiness.html
Grasshopper: http://photoshd.wordpress.com/2008/06/29/my-grasshopper-friend/
Pair Bond: http://www.digitalhit.com/posters/p/3508119
Flyways Two: http://mapathon.com/copy.htm
Canada Warbler Map: http://scienceblogs.com/gregladen/2008/03/boreal_and_south_american_bird.php
Banding: Adam Landon 2010
Snow Goose Neck Band: http://birdband.sasktelwebhosting.com/
Leg Band: http://www.singing-wings-aviary.com/birdbanding.htm
Bird on Scale: Adam Landon 2010
Bird Wing Measure: Amanda Filipi 2010