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Hummingbird
Migration Update: April 9, 2009 |
Today's
Report Includes:
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Please
Report
Your Sightings! >> |
What's
the story behind this scene? >>
Photo: Russ Thompson |
The
Migration: Highlights, Maps,
and Questions |
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Distribution Map |
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Rufous
Hummingbird
This
Week's Map >>
Week-by-Week Animation >>
Sightings >> |
Ruby-throated
Hummingbird
This
Week's Map >>
Week-by-Week Animation >>
Sightings >>
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Handouts:
Today's Hummingbird Map Questions
Rufous Questions >
Rubythroat
Questions >
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Loads
of rubythroats showed up in just two days. What can we learn
from a satellite map? >> |
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Highlights:
Early Rubythroats Rush, Rufous Reach Alaska!
Whoosh!
You'd think that ruby-throated hummers were racing the clock. Despite
very active weather, cold temperatures, mini-blizzards, and high
winds, they made a great leap northward. In two days alone, some
determined hummers landed in seven new states! You can compare rubythroat
arrival charts from 2008
and 2009
to see which states had extra-early early birds.
While
a handful of birds seemed to jump ahead, others continued to fill
in south of the migration's leading edge. Watch
the week-by-week
animation to see how rubythroats are winging their way northward.
With
all the talk of harsh weather, some hummingbird watchers are worried:
"I wonder how the hummers deal with those freezing temperatures."
"It's funny that they chose this cold and dreary spring to
be early!" If you're also curious about how hummers get by,
read what some experts think:
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Cold
and Wild Weather: How Do Rubythroats Get By? >>
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Discover
what Journey North's citizen scientists shared this week >>
Speaking
of rough weather, two rufous males have been reported in Alaska!
Are they pushing the northern limit for that species? Look at
today's map question handout and decide what you think.
We got word this week from observers in
the South that rubythroats are acting up! "I saw my first
two rubythroat males today and they were already fighting."
"I saw a male Ruby-throated doing a U dance." What should
we make of these antics? Male hummers have strong springtime instincts.
This week's slideshow reveals some secrets.
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Slideshow:
Males on a Mission! |
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Male hummers
heading north have no choice in the matter. They have an overwhelming
urge to set up territories, defend food sources, and more. And that's
no easy task! Discover why.
- Slideshow:
Make Way for Nesting: A Tale of Territories, Thieves, and Courtship
>>
- Slideshow
Handout >>
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Journal:
A
Tale of a Perfect Territory
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Once
you've watched the slideshow, imagine you're a migrating male hummingbird
looking for a good territory. Choose one of the following:
1. Write a "want-ad" that describes what would
make an ideal habitat, OR
2. Draw a picture — from a birds-eye view —
that shows the important features you're looking for in your territory.
- Use
your Hummingbird Journal to tell the story! >>
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This male
rubythroat is on the lookout for intruders!
Photo:
Laura Erickson |
Math
Puzzle :
How Fast Does the Migration Travel? |
Migrating animals
travel at very different average rates. A bog turtle might travel just
56 feet in a day, but a monarch butterfly might fly 40 to 100 miles a
day! How fast and far do ruby-throated hummingbirds travel?
You be the
judge! Use our migration maps to make an estimate. Then use your answer
to predict when the migration will reach you, the Canadian border, or
another location!
- Estimating
Migration Rate: How Many Miles a Day Do Rubythroats Travel? >>
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Expert
answers to your hummingbird questions!
You'll
find them all here >> |
This
Week's Hummingbird Resources |
- Activity:
Estimating Migration Rate: How Many Miles a Day Do
Rubythroats Travel? >>
-
Predict: Where Will They Arrive, and When? Making Predictions
>>
- Slideshow:
Make Way for Nesting: A Tale of Territories, Thieves, and Courtship
>>
- Study:
Weather and Songbird Migration >>
- Photo
Observation: What's the Story Behind This Scene? >>
- Video
Clip :
One Minute with a Hummingbird: What Do You See? >>
- Hummingbird
Migration Journals (click-and-print) >>
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The
Next Hummingbird Migration Update Will Be Posted on April 16, 2009.
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