Plumage & Moult. A Photo Gallery

A White-tailed Eagle Database Project

Moderator: maertha/felis silvestris

Locked
maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Plumage & Moult. A Photo Gallery

Post by maertha » January 19th, 2011, 10:54 pm

+++ Sorry, the photos in this topic are currently not available. Because Photobucket has changed the terms of use, you see an information about "3rd Party Hosting" instead of images. Please check back soon. More information here https://www.theverge.com/2017/7/4/15919 ... aid-update +++

Plumage & Moult


"Age determination is quite tricky sometimes, because individual variation is wide. As WtEs mainly moult (change the feathers) every year from spring up to autumn - it is better to determine in our case the age in winters (not in years). They do not change all the feathers once, also not every feather every year, but main moulting time is during the warm season.

The eagles born in May 2010 are not one year old during their first winter, yet. And, for example, eagles born in 2007 are not four years old, yet - but their age we write 1w (first winter bird) or 4w (fourth winter bird), respectively.

Also ageing in calendar years is not good, because we need then to add one year at 1st of January, though no remarkable changes in feathering... Calendar years are good to use in summer for example."

Text by Urmas Sellis, Eagle Club
Picture upload by Looduskalender forum member Mutikluti

Additional information: How old is the Golden Eagle. Text and photos by Bird Club Leksand
http://www.leksandsfagelklubb.se/projek ... aging.html


Scroll down the page to find a choice of pictures with explanations on this subject below. Kotkaklubi members will provide photographs for this topic.

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » January 19th, 2011, 10:54 pm

Kotkaklubi/Eagle Club

"The Eagle Club is a non-governmental organisation whose members have studied, observed and protected eagles for decades.

Currently, the Eagle Club comprises 25 members who occupy themselves with research on eagles and black stork and their protection in Estonia. They include both specialists in ornithology and nature conservation, foresters, and also enthusiasts of nature and eagles protection.

It is possible to join the Eagle Club only if the active members unanimously approve a new member’s nomination. The activities of the Eagle Club are coordinated by a managing board which consists of three members. Although the activities of the Eagle Club are voluntary, they are financially supported by various projects. Members of the Eagle Club can be found almost everywhere in Estonia. The Eagle Club has coordinators in every county, who deal with the more urgent local problems." Read more: http://www.kotkas.ee/ENG/club.html

Text by Kotkas.ee ® 2007

If you live in Estonia and if you have observation data regarding a family of eagles or you happen to find unusually large nests of accipitridae, do not hesitate to contact Kotkaklubi.

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » January 19th, 2011, 10:54 pm

Further Reading

The plumages of the White-tailed Eagle under the influence of individual and geographic variation
  • (Die Kleider des Seeadlers (Haliaeetus albicilla) unter dem Einfluss individueller und geografischer Variation). By Remo Probst & Bernd Struwe-Juhl. In German with English summary. Contains many pictures; captions in German and English. Click and scroll down the page to find the article at: European Raptors. Biology and Conservation http://europeanraptors.org/interviews/i ... emo_probst

Flight feather moult of White-tailed Eagle (Haliaeetus albicilla) in Schleswig-Holstein, Germany
  • (Zur Mauser des Großgefieders beim Seeadler (Haliaeetus albicilla) in Schleswig-Holstein). By Struwe-Juhl, B. and Schmidt, R. (2003), Journal für Ornithologie, 144: 418–437. doi: 10.1111/j.1439-0361.2003.03041.x. Summary in German and English. http://onlinelibrary.wiley.com/doi/10.1 ... x/abstract

Raptor Moult Patterns and Age Criteria
  • By Carl Edelstam, pp. 50-53; see also: pp. 402-406: White-tailed Fish-Eagle. Both articles in: Raptors of the world. Text Copyright 2001 by James Ferguson-Lees,David A. Christie. Online available. Go to Google/Books; type "Raptors of the world" into the search mask

Patterns of moult in large birds of prey
Carl Edelstam, 1984. Ann. Zool. Fennici 21:271-276
Page 4 (274): Upper aspect of a Scandinavian White-tailed Eagle in his first, second and third winter
Page 5 (275): Moult in the White-tailed Eagle
http://www.sekj.org/PDF/anzf21/anzf21-271-276.pdf

User avatar
Mutikluti
Registered user
Posts: 12556
Joined: October 11th, 2008, 9:29 am
Location: Harjumaa, Estonia

Post by Mutikluti » January 19th, 2011, 11:47 pm

Image

Image

Image
Proud to be a member of SHoW

User avatar
Mutikluti
Registered user
Posts: 12556
Joined: October 11th, 2008, 9:29 am
Location: Harjumaa, Estonia

Post by Mutikluti » October 24th, 2011, 6:46 pm

Image
Proud to be a member of SHoW

User avatar
Mutikluti
Registered user
Posts: 12556
Joined: October 11th, 2008, 9:29 am
Location: Harjumaa, Estonia

Post by Mutikluti » October 24th, 2011, 6:47 pm

Image

Image

Image
Proud to be a member of SHoW

User avatar
Mutikluti
Registered user
Posts: 12556
Joined: October 11th, 2008, 9:29 am
Location: Harjumaa, Estonia

Post by Mutikluti » October 24th, 2011, 6:48 pm

Image

Image

Image
Proud to be a member of SHoW

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:18 pm

Image

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:18 pm

Image

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:19 pm

Image

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:19 pm

Image

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:20 pm

Image

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:20 pm

Image

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:20 pm

Image

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:21 pm

Image

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:21 pm

Image

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:21 pm

Image

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:22 pm

Image

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:22 pm

Image

maertha
Moderator
Posts: 4117
Joined: May 5th, 2010, 9:10 pm

Post by maertha » February 17th, 2012, 9:22 pm

Image

Locked

Return to “The Haliaeetus Albicilla Collection”