Bald Eagle Migration Update: March 9, 1998
Today's Report Contains
Get Ready for the Migration!
The eagles should take off before next update. Last spring, Jim Watson's eagle # 05 began her trip between 3/17 and 3/22, and eagle # 16 took off the same week, sometime between 3/19 and 3/24. Out in New York Peter Nye says, "They'll be heading home soon!"
While waiting for the eagles to migrate, keep a close eye on the weather, and be sure to review Glen Schuster's weekly weather briefs. Here are the weather maps he recommends for Canada:
As the Crow Flies..
Here's a WWW site that lets you find the distance between two places, using latitude and longitude. The distance is calculated "as the crow flies", says the site--but it works for eagles too. It even gives you a map showing the location of both places.
Field Notes from Biologist Peter Nye
Writing directly from his laptop in the field, Peter Nye sends this exciting news:
To: Journey North
P.S. #F43 is on the Move (& Challenge Question #6)
Back from the field this weekend, Peter Nye sent this latest news:
"Eagle #F43 seems to be on the move rather quickly; we may have caught her on her way through. On 5 March, she was already 35 km north of the capture site, and 25km east of the Hudson River. This 7 March reading puts her at the _________ Reservoir in the state of _________. They have half dozen pairs or so nesting there, and I hope F43 is not one of them! Hope she is just stopping on her way to farther NE, Maine or beyond. As of 7 March, Eagle # F42 is still hanging tight on the lower Hudson near Croton. When/where will she move?"
According to the satellite readings for eagle #F43, how would you complete Peter Nye's sentence above?
Challenge Question #6
"In what state, and near what reservoir, was eagle #F43 on March 7th?"
(To respond to this question, please follow the instructions at the end of
Today's Satellite Migration Data from EASTERN EAGLES
Reminder: Challenge Question # 3
Using all satellite data between December 31st and February 18th, plot the winter range of # F 42. Then see if you can answer this question:
To respond to this question, please follow the instructions at the end of this report.
Latest News from Biologist Jim Watson
"There is only 1 telemetered eagle still on the Skagit
River. Most have moved to other wintering areas, and a few birds have started to migrate. I trapped the last eagle
for this winter on February 23rd--and she was the 23rd adult we've trapped and released with a satellite transmitter.
She was all white except for a couple dark feathers in her crown (freckles). She was very fiesty -- usually the
females are quite docile once in hand, and it is the male eagles squirm and bite. Just 2 days after release she
was 150 kilometers away!
"All of that is programmed during construction of the PTTs and is fixed. That makes it a challenge to anticipate what will happen. These PTTs are on these basic cycles:
The intent of this is to preserve battery life by eliminating transmissions that are not important. One of the
technologies they are playing with is remote programming. You can see it would alleviate a lot of problems.
Challenge Question # 5
Today's Satellite Migration Data from WESTERN EAGLES
Make Predictions Now
Plan to compare Eagle #05 & #16's migrations this year to their trips last year. Will they take off at the same time this spring? Will they travel the same route, and at the same rate? Remember, data from the 1997 migrations of these 2 birds will be added to the WWW as the 1998 data arrive.
How to Respond to Today's Bald Eagle Challenge Questions
Please answer only ONE question in each e-mail message.
1. Address an e-mail message to: firstname.lastname@example.org
2. In the Subject Line of your message write: Challenge Question # 3 (or #6)
3. In the body of the message, give your answer one Challenge Question # 3 or (#6).
The Next Bald Eagle Migration Update will Be Posted on March 23, 1998.
Copyright 1998 Journey North. All Rights Reserved.