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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 1st, 2017, 4:48 pm 
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hansa wrote me a remark about the nest and asked me to post it here, not being sure if she/he can make the post her/himself:
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The height of the nest has been considerably increased, thereby also the weight. The eagles are urgently advised to consult a structural analyst to check the safety of the tree top considering, snow.ice and wind loads
:-)

this is a quite valid remark: a pile of sticks this big also weighs a lot. :thumbs:
but this is a very new nest, it has been built only in two springs. it is known that some eagle's nests have been in use for decades. every spring new material is brought to the nest and it will grow bigger every year. finally the nest may become so heavy that the tree simply collapses under the weight. usually this happens in the winter when snow on the nest adds weight.

John Love writes about the nests (p. 52), that the average diameter is about 1.5 m. he quotes the research of Johann Willgohs in Norway. Willgohs found one nest which had been in use for 8 years. it was 2 m tall and another 30 cm of material was added in the 9th year, although the nest wasn't even in use later in that summer. by next season new material was added so it became 3 m tall. the estimated weight of such construction may be several tons. on page 53 in Love's book there a picture by Willgohs of this nest. (i can't find it anywhere for posting... it would probably be against copyright any way. :slap: )

the nest bowl is about 20 cm - 45 cm in diameter and about 10 cm deep (Willgohs 1961).

the first two books are here:
viewtopic.php?p=402920#p402920
Fischer's book:
viewtopic.php?p=443394#p443394

btw: i suppose that eagles "know" what they do in building their nests. unfortunately this does not always apply to humans. in Turku a new hospital is being built on top of a four-lane highway and two-lane railroad. soon after they had started to build the foundation pillars for the building it turned out that the concrete which they used was too soft and brittle.
now they have to tear everything down and start the building work all over again. :rotf:

while i was writing it became dark at about 5 pm. :wave:


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 1st, 2017, 5:55 pm 
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Liz01 wrote:
Hello Kertugal/ Sophie :hi:
Welcome back :gathering:


:wave:
I alway here, every day i wacht apened to our friends but i don't write

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[b]Sophie[/b]


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 1st, 2017, 6:19 pm 
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ame wrote:
i made a picture of Tringa's photograph taken of the nest tree where i marked the branches which we can see in the camera.
.....................


thank you! :2thumbsup: I also hade this thought today and did the same as you. The picture of Tringa is very suitable!

you've done much today :bow: :loveshower: (it is January 1st)


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 8:28 am 
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January 2

good morning :hi:
Today is a good day to visit the nest. I hope, that Shilute and Vents know it :mrgreen:

Kertugal wrote:
I alway here, every day i wacht apened to our friends but i don't write


:2thumbsup:


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 9:11 am 
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I hear funny noises :laugh: between 9:09 -9:11 Buzzard and Nutcracker. In the Moment a Bird? makes brrrrrrrrrrrr brrrrrrrrrrrr :laugh:

9:13 it is still calling

9:14:50 Aha a Jay visit the nest :rotf:


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 9:48 am 
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9:43 Vents came home. :D

i'm recording a video of the funny voices which Liz heard earlier. i think it was a jay. i hear someone rattling its feet on a branch quite near the camera. among the funny voices there are some rather normal jay voices. i think that the jay was singing. it was probably a little in a spring mood already. after all the wind had stopped and it was only raining gently.
a nutcracker also made some very loud nois- ehm voices but my principle suspect is the jay. it was even seen on the scene of the "crime" although not in action. :whistling:


9:45 also Shilute came. Vents went to the left branch.

i'll add clips later.
(Liz, i didn't make all the material yesterday. i wasn't hardworking, i perhapsonly looked like it. :mrgreen:
the branch picture i made a few days ago. i saved it for a rainy day, without anything else special. :whistling: )


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 10:37 am 
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Good Morning!

ame wrote:

John Love writes about the nests (p. 52), that the average diameter is about 1.5 m. he quotes the research of Johann Wilgohs in Norway. Wilgohs found one nest which had been in use for 8 years. it was 2 m tall and another 30 cm of material was added in the 9th year, although the nest wasn't even in use later in that summer. by next season new material was added so it became 3 m tall. the estimated weight of such construction may be several tons. on page 53 in Love's book there a picture by Willgohs of this nest. (i can't find it anywhere for posting... it would probably be against copyright any way. :slap: )


A very interesting discussion.

On this search for a picture, I think that the info of the first on the left, is interesting although it's a Bald.


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 11:05 am 
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Shilute brought a green twig :laugh: (I was away...typical that they'll come when I'm away :rolleyes: :mrgreen: )
Vents
Image

Shilute with her twig an pine cone
Image

9:50 Shilute went on the left branch
then both go back in the nest.
Image

Shilute digs in the nest bottom. :innocent:
9:51 Vents jumps on the left branch
9:53 he flew away
9:54 Shilute followed


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 11:55 am 
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Abigyl wrote:
.... On this search for a picture, I think that the info of the first on the left, is interesting although it's a Bald.

:puzzled: now i'm afraid i did't quite understand...? Love's book is about the H. albicilla.
the nests of bald eagles are are very similar to the nests of WTE's.

9:42 Vents brought nothing but Shilute brought a nice cone-decorated twig. :2thumbsup:
Vents went up to the top balcony.


9:50 both changed places twice so both ended up where they were in the beginning. :mrgreen:


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 11:57 am 
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9:52 Vents flew away.


9:54 Shilute flew away, too.


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 1:41 pm 
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13:39:50 three Birds flew from the top? :puzzled: Raven :shake:

yes, there were three raven. But it was a formation flight.


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 2:34 pm 
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the cam doesn't work :puzzled:
14:35 it works again. butthe stream is choppy.


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 2:36 pm 
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Liz01 wrote:
13:39:50 three Birds flew from the top? :puzzled: Raven :shake:

yes, there were three raven. But it was a formation flight.

funny gurgling voices they made. :laugh:


the stream begins to stagger... :bash:
the weather is beautiful but the camera freezes.

i made a picture of the Norwegian nest which i wrote about yesterday in the hard way: hubby scanned it from the photocopy of the Willgohs' book which i borrowed from the library once.
the height of the nest is 3 m. there's a 3-week-old eaglet on top of the nest as a "meter stick". :laugh:
Image

14:48 the stream is back to normal.


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 3:55 pm 
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Ame, this Nest is :shock: :shock: It is a tower. great work from the eagles :bow:


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 4:32 pm 
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15:47 i think i heard a fox calling twice. :puzzled:


a few minutes before 4 pm it started to snow. now the nest has a light dusting of snow. :rolleyes:
ftp://ftp.ldf.lv/kameras/2016/juras-erg ... -16-30.jpg

17:13 it's almost completely dark but the shape of the nest can still be seen, thanks to the thin layer of snow on it.
:wave:


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 8:57 pm 
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ame wrote:
i made a picture of the Norwegian nest which i wrote about yesterday in the hard way: hubby scanned it from the photocopy of the Willgohs' book which i borrowed from the library once.
the height of the nest is 3 m. there's a 3-week-old eaglet on top of the nest as a "meter stick". :laugh:


Ame, Thanks to Hubby !!

It's amazing :thumbs:


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 2nd, 2017, 11:04 pm 
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Hello eagle friends!
With a start of new year and new eagle season I would like to thank you once more for your input in making this forum alive! And special thanks to ame for taking care...
This is the moment to tell a bit about the future plans: we are going to maintain camera at Durbe nest throughout this season. The same as last winter we are dependant on solar panels and batteries what means potential interruptions - during January we will have to change the batteries at least once (it depends on the weather conditions - days with direct sunlight).
Camera systems at nests of Black stork and Goshawk will be maintained as well, it is not yet decided about the Ospreys (more will be known at late February).
Have a good season and interesting watching!


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 3rd, 2017, 6:51 am 
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Janis, Thank you for these wonderful news. :2thumbsup: It will be again an interesting season.

I'm very pleased, that the black stork camera will be back :bow: :laugh:
has the battery still enough capacity. Or needs this Camra slso a new battery?


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 3rd, 2017, 7:37 am 
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JANUARY 3rd

Good Morning!

07:32 Cam is on


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 Post subject: Re: Latvian WtE nest webcamera Juras-erglis 2017
PostPosted: January 3rd, 2017, 7:55 am 
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Good Morning :laugh:
It will be bright. he moon is visible through the clouds. It's snow in the nest :shake:

8:35 :laugh:
Image


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