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A White-tailed Eagle Database Project

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maertha
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Re: Talk about

Post by maertha » April 19th, 2016, 7:35 pm

All sperm are equal, but some sperm are more equal than others?

Interesting paper: "Sperm competition in birds". Abstract and free full text available at PubMed Commons (National Center for Biotechnology Information, U.S. National Library of Medicine). http://www.ncbi.nlm.nih.gov/pubmed/9685191

Image
By Gilberto Santa Rosa from Rio de Janeiro, Brazil. (be_sperm.) [CC BY 2.0
(http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons


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Post by maertha » April 20th, 2016, 5:55 pm

Denmark: The risks of cycling. Unlucky eagle trapped under bicyle basket

According to the article, the bird crash-landed in a backyard in the city of Slagelse - probably after a collision with a power line. The injured eagle was taken to a Wildlife Center and is still on antibiotics and painkillers. Photo and article (in Danish) at tv2.dk, 17 April 2016. Thanks to b.h-p for the hint. http://nyheder.tv2.dk/samfund/2016-04-1 ... estillende

Image
Cycling in Denmark. By Tomasz Sienicki [user: tsca, mail: tomasz.sienicki at gmail.com] (Own Work (by tsca)) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC-BY-SA-3.0
(http://creativecommons.org/licenses/by-sa/3.0/) or CC BY 2.5 (http://creativecommons.org/licenses/by/2.5)], via Wikimedia Commons

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Post by maertha » April 22nd, 2016, 5:48 pm

Happy Earth Day!

"Each year, Earth Day—April 22—marks the anniversary of the birth of the modern environmental movement in 1970." See more at: http://www.earthday.org/about/the-histo ... 49MLs.dpuf

Some Facts, Trends and good News

University of Michigan

maertha
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Post by maertha » April 23rd, 2016, 1:18 pm

What kind of birdwatcher are you? 8-)

“A tribute to the birding community, which comprises of truly wonderful people, and of which I am a proud member.” (Rohan Chakravarty)

Image
The raven. Carl Spitzweg (1808-1885), public domain

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Post by maertha » April 24th, 2016, 11:35 am

Danish “webcam eagle” brings live hare home

“Raptors sometimes bring prey that is still alive to their nests, or potential prey may blunder into raptor nests or result from competition for a nest. Such delivery of live prey seems incidental or accidental and non-adaptive: the live prey sometimes escape.” (Spofford & Amadon 1993) At the time the paper was written, all classes of prey were observed in raptor nests except mammals. In 2010 cygnets were brought to the Looduskalender White-tailed Eagle nest by the Estonian breeding pair Linda and Sulev. One young swan escaped over the rim of the nest when the eaglets were seven weeks old (see June 2010).

Image
Young hare. Albrecht Dürer 1471-1528, public domain

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Post by maertha » April 25th, 2016, 5:37 pm

Ukraine: When nature takes over

What “types of animals live in the shadow of Chernobyl and does the level of radiation in an area influence the animals that are present? To help answer these questions, we have been studying the wildlife of the Chernobyl Exclusion Zone using motion-activated cameras to survey medium to large animals (primarily mammals) in different parts of the zone. (…) Although the camera study is primarily focused on mammals, we have also recorded several protected bird species including black stork (Ciconia nigra), golden eagle (Aquila chrysaetos) and white-tailed eagle (Haliaeetus albicilla).” Read more https://thebiologist.rsb.org.uk/biologi ... -the-ashes

Image
By Adrien Facélina - Erioll world 2.svg Hendrik Tammen - Nuclear power plant.svg Hullernuc - derivative works
(Own Work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons


26 April 1986: Remembering the day of the disaster
“Here we were, experts in our fields and in radiation, and we didn’t know where to begin or even recognise the scale of the disaster.” (Sergii Mirnyi, a 27 year old chemist at the time of the disaster) http://chernobylgallery.com/chernobyl-d ... quidators/

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Post by maertha » April 30th, 2016, 11:25 pm

Germany: Falling in love again

Hamburg is home to three White-tailed Eagle breeding pairs. According to a newspaper article, one of these couples raised young in the Süderelbe territory in 2014 and 2015. This year the new breeding season had just begun for them when the male was killed by a wind turbine on March 8th. The female, born and ringed in 2010, continued to incubate for more than one week. After this time she left the nest occasionally, but covered the eggs thoroughly. Ornithologists reported that she abandoned the brood and left the area on March 22nd. On March 29 the “widow” came back with an adult male eagle. Matings have been ovserved, and both birds visit the nest on a regular basis.

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Post by maertha » May 1st, 2016, 1:07 am

May Day Announces the Onset of Summer Image

“When we reach the first of May, Earth has moved along its orbit to where the Northern Hemisphere is receiving an ever increasing flow of energy as each day is longer than the one before.”
Read more at The Clark Foundation/Project ASTRO UTAH http://www.clarkfoundation.org/astro-ut ... ermay.html

Image
Walpurgisnacht/Walpurgis Night, Ernst Barlach (1870-1938). Public domain
  • If you like snakes, adopt a May cat: According to the Superstition Dictionary, “cats born in May will never catch mice or rats, but will instead bring into the house snakes (…).” :rolleyes:
  • May Day in Science, History and Lore. An Annotated & Illustrated Collection of Worldwide Links to Mythologies, Fairy Tales & Folklore, Sacred Arts & Sacred Traditions by Kathleen Jenks http://www.mythinglinks.org/Beltane.html

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Post by maertha » May 3rd, 2016, 6:42 pm

Mysterious death of Hungarian “camera eagle”

According to Pécsi Újság.hu, the male bird died from suspected poisoning.

Image
Public domain

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Post by maertha » May 4th, 2016, 5:25 pm

Amazing Video: Fox visits Eagle Owl Family in Denmark


DOFBirdLife, 3 May 2016



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Post by maertha » May 7th, 2016, 1:13 pm

Denmark: Coot escapes from "webcam nest"

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Boraston, John Maclair. 1909, public domain

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Post by Liz01 » May 10th, 2016, 5:42 pm

8.05.2016 at 11:39 Latvian Blackstork

viewtopic.php?p=463908#p463908

viewtopic.php?p=463940#p463940

a WTE an the Blackstork Nest

Image


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Post by maertha » May 10th, 2016, 5:44 pm

Denmark: Coot escapes from the nest


DOFBirdLife, 9 May 2016

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Post by maertha » May 14th, 2016, 1:32 pm

Germany: Female roe deer tries to protect her young

A fawn was probably injured or killed during mowing. According to the article, the doe led the uninjured twin sibling to safety in a meadow nearby before she defended the other little one successfully against crows and a red kite. But when the White-tailed Eagle swooped down, she had no chance.

Image
Example image. Roe deer fawn, hidden in the long grass. Photo by Gilles San Martin [CC BY-SA 2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons

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Post by maertha » May 18th, 2016, 9:25 pm

Free like a bird?

According to PR Newswire, a new Fiat ad was shot in conjunction “with Freedom, a conservation movement that supports and protects threatened birds of prey, to help create the first commercial co-directed by eagles. (…) The eagles featured in the video are currently dependent on falconer Jacques Olivier Travers, who is working to reintroduce them into their natural habitat.” Travers´ website reports that “Jacques Olivier and his team are convinced that it is possible to reintroduce adult birds into the nature (…) and that he developed ten years ago a “flying teaching” method for eagles which opens “the way to a new method of reintroducing eagles into the nature.”

As far as is known, none of his White-tailed Eagles was released back into “the wild” in France yet. Experts say that if “young birds imprint on humans, they will identify with humans for life. Reversing the imprinting process is impossible (…).” (The Wildlife Center of Virginia). “An imprinted raptor cannot be returned to the wild because it has lost its natural fear of humans.” (The Raptor Center)

Jacques Olivier Travers provides trained eagles for TV, parties, tradeshows, fairs etc. On his Website he offers to film the animals from a paraglider, ULM or from helicopters. To put a camera on the birds is another special service of his company; along with his business partners he produced footage which shows a bird´s-eye view of several big cities. The falconer created also the raptor park Les Aigles du Léman in the French countryside. Here he plans to build Europe´s largest breeding centre for White-tailed Eagles.

Isn´t it somewhat paradoxical that eagles who have to live in captivity are used as a symbol for freedom?

Image
Trappings and gear used in falconry. Drawing by Louis Agassiz Fuertes, public domain.

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Post by maertha » May 19th, 2016, 6:21 pm

Czech Republic: Strange prey in the nest :shock:

Image
By JosefLehmkuhl (own work), public domain

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Post by maertha » May 22nd, 2016, 5:50 pm

Ireland: Kerry eagle chick dies after suspected nest disturbance

"An eagle chick, the first to have hatched on a lake island in Killarney in over 100 years and which was being closely minded by local anglers, has not survived. (…) It is suspected crows killed the chick - and there may have even been two chicks in the nest - as a result of the adults leaving it unguarded after being disturbed."

Image
Example image. A chick of the White-tailed Eagle (Haliaeetus albicilla) in Cherkasy region, Ukraine. By Maxim Gavrilyuk
(Own Work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons


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Post by maertha » May 26th, 2016, 7:02 pm

UK: Freedom for Stan

Do you remember? White-tailed Eagle Stan – named after after Kazakhstan, where he is orignially from - escaped from Warwick Castle during a falconry show in early September 2012. Even though he lived in captivity for more than eight years, Stan managed to survive “in the wild” for at least four month. He was spotted several times. Attempts to recapture him ended in January 2013. Wildlife expert Richard James predicted that the 10-year-old raptor should be able to survive – “provided he keeps clear of overhead power lines and has a ready supply of roadkill.” The Leamington Courier mentioned today that Stan never returned to Warwick Castle.
  • Image
By Alex Hilsenbeck (Own work) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons

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Post by maertha » May 29th, 2016, 6:32 pm

Canada: An incredible rescue :2thumbsup:

In May 2012, the Mountainaire Avian Rescue Society “received a call in the evening of May 29th about an eagle tangled in kite string in a tree in Royston. The eagle was at least 40' up and it became obvious that a tree climber was necessary. At 6 am the next morning everyone assembled to watch Steve Harding of Timberwolf Tree Service, in Campbell River, climb up and free the eagle. He did this on his own time, as he has done in the past, for other birds.” (Info: Youtube Video description) Thanks to b.h-p for the hint!


Mountainaire Avian Rescue Society (MARS), May 2012

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Post by maertha » May 31st, 2016, 5:15 pm

WWF Finland: Eagle nest monitoring via quadcopter-cams planned

The video shows a bird's-eye view of a nesting site.

WWF Suomi, March 2016
  • See also: Swords into plowshares: Drones as conservation tool/Sea eagle nest monitoring via UAV (Unmanned Aerial Vehicle), 4 October 2015 viewtopic.php?f=46&t=236&start=320

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