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Migration
Update: March 12, 2008 |
Today's Report Includes:
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Look who's "holding hands" in mid-air!
Find out more >>
Photo: Jon McRay
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Maps
and Data |
It
is noticeable now; days are lengthening. There's one more hour of light
since mid-February in central NY State. Have you felt the changes where
you
live?
The bald eagles are starting to notice. Migration, like many other
behaviors,
is governed
primarily by changing day length. As days
get longer, a bird's physiology changes, especially their hormone levels.
This in turn stimulates changes in behavior.
What do
today's eagle maps tell you? Do you see some change in eagle behavior?
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Golden
Eagle
(map)
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- Questions
about this week's map >>
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Explore:
Migration
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Faithful
Habits
Thanks
to satellite radios that can operate for multiple years, we have learned
a great deal about our eagles. We have learned where they go in winter.
We have tracked their migratory routes, and know their nesting areas.
We have also noticed some things about when their migrations start. |
Each
year Bald eagle U27 is faithfully the first of our
eagles to begin her spring migration. This spring she appears to
have started sometime around March 3. Notice the distance she
covered by March 7.
Early or Late?
How does this year's start compare to the past 2 years? Find out
for yourself. Go to each year's map and click on the migration
path north:
- 2006 Bald Eagle Map >>
- 2007 Bald Eagle Map >>
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Eagle
Behavior: Spectacular Aerial Displays |
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Talon-grappling,
cart-wheeling, and tumbling in mid-air are frequently observed
eagle behaviors. Anyone
who witnesses it says it's the most amazing thing they've ever
seen! Why do they do it?
Eagle
watchers often think of it as courtship display. Others think it
could be just for play.
- Thanks
to photographer Jon McRay you can come along for a viewing! >>
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News
From New Hampshire |
The
NH Eagles (No Eagles,
Yet!)
"Hi
Journey North!"
"This afternoon I delivered one more frozen deer to
our capture site near the Merrimack River, placing it at
the south bait pile..."
Find out more about the efforts in NH. Read Chris Martin's
recent diary entry >> |
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Which "hand" is bigger?! |
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Links:
This Week's Eagle Resources |
- Latitude,
Longitude, and Distance Traveled >>
- About
Eagle Migration and Weather >>
- Journal: Bald
Eagle Journal >>
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The
Next Bald Eagle Migration Update Will Be Posted on March 19,
2008.
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