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Thread subject: How Long Is Their Journey?
Name Date Message
Anne 09/22/05 07:36 am I have just been sorting out my notes for my first evening class of the season tonight and I have come across some information on osprey migration.I dont know where this info came from (but I trust my tutor as an impeccable source of all things ornithological).

It says that under The Anglian Water Osprey Project, a female juvenile leaving Rutland on 30th August reached Senegal, almost 5000km south in 20 days.

A Scottish adult female ringed in Nairn, N.Scotland on 21 August reached Guinea on 29 September, crossing the Sahara well inland from the Atlantic and taking 13 days from Gibralter.

Do we know how long it takes the east coast birds to reach their wintering grounds?
Tiger 09/22/05 08:27 am Well we have the example of bluebeard last year. He left Martha's Vinyard on Sept 27 and arrived at his winter quarters on October 25.

The Osprey-ometer now reads 3603 mi. (5798 km). He left the Vineyard 31 days ago and averaged 116 miles/day (186 km/day). After making landfall in Colombia, he covered 703 miles (1131 km) in 5 days, averaging 141 miles/day during this stretch.


See:

http://www.bioweb.uncc.edu/bierregaard/migration_'04.htm


for details and much more.

Tiger 09/22/05 08:28 am And of course the Finnish ospreys Mirja etc.



See:



http://www.fmnh.helsinki.fi/english/zoology/satelliteospreys/

and:

http://www.fmnh.helsinki.fi/english/zoology/satelliteospreys/2002/mirja.htm


Anne 09/22/05 09:55 am Fascinating. Thanks for that Tiger.

Copyright © 2006 DPOF

Tom Throwe
Last modified: Sat Feb 18, 2006