Following Karls' Families

[Solo]

... I believe it should work. https://drive.google.com/open?id=17gGnN ... sp=sharing

Anne, it works

[Hellem]

Anne , all is OK with your Maru's tracker map

[Anne7]

OK. That's a relief.

Thanks a lot, Solo and Hellem!

And here is Karula's Tracker map from today, November 11, between 05:18 and 09:02 (UTC+2 time)
Karula_Nov11
https://drive.google.com/open?id=1TpUwR ... sp=sharing

Jo, I hope that it quickly becomes clear what the problem is, on your computer.

I found some other photos of Karula's area.
All 3 photos are from "Tal Nature Reserve"

The HaGoshrim Reservoir.

https://goo.gl/maps/HgBnmXqVfkv

Could these be the ponds where Karula is fishing most of the time?
Did you see: DANGER MINES !

https://goo.gl/maps/UVVSDFrUNq12

And if all fish are eaten, there are still these cuties to put on the menu.

https://goo.gl/maps/e5PTwhNHTwL2

[Solo]

... And here is Karula's Tracker map from today, November 11, between 05:18 and 09:02 (UTC+2 time) ...

Anne, all is OK also with Karula's tracker map

btw. Time in HaGoshrim, Israel now 3:09 PM Sunday, November 11, 2018 (GMT+2)

early morning on the way to feeding place (an searching for food)

[Solo]

... Could these be the ponds where Karula is fishing most of the time? Did you see: DANGER MINES ! https://up.picr.de/34309108wi.jpg ...

Anne,
here is our Karula : (or here the street view https://goo.gl/maps/QDbMT42zzos and more SW, photos https://bit.ly/2zJe5K2 - view on the area from Fortifications Givat Haim)

https://www.looduskalender.ee/forum/vie ... 36#p621436

[Anne7]

Anne,
here is our Karula : (or here the street view https://goo.gl/maps/QDbMT42zzos)
https://i.postimg.cc/RVp5nrLC/KARULA-day.jpg
https://www.looduskalender.ee/forum/vie ... 36#p621436

Thanks, Solo.
I saw your photo!
I just wondered if the photo that I found (with title Tal Nature Reserve !) showed the same ponds, photographed from another location. And, if not, which ponds these could be.


Circling Radius
As I wanted to know what the circling radius is for BS, climbing up on a thermal, I did some research.

I found this very interesting study. It isn't very easy to understand (for me), but it is very informative.
https://arxiv.org/pdf/1012.0434.pdf

Thermal soaring flight of birds and UAVs

...Thermals are spatially and temporally localized parts of the atmosphere created by solar radiation heating the ground, typically moving upwards with a speed in the range of 1–10m/s. ...

...The soaring flight trajectory of the peregrine falcon (Falco peregrinus) and the white stork (Ciconia ciconia) were recorded recently by GPS and were compared to the flight of paragliders and hang gliders...



... It is known from measurements and theoretical calculations that thermals are not equally strong from the ground to the top. The vertical velocity profile depends on the actual weather conditions but usually, the middle part is stronger and it is weaker near the ground and at the top. As higher wing loading causes higher minimum sinking speed, birds with higher wing loading are not able to exploit the weaker top and bottom part of the thermal...



...The calculated circling radius of the falcon (21.1m) and the stork (21.7m) were also in agreement with the observations and arguments in earlier studies, namely that the mean circling radius is linearly proportional to wing loading...

So:
- Storks soar upwards in circles with a diameter of ca. 43,4 m.
- They only use the middle (= strongest) part of a thermal.
- Thermals move upwards with a speed in the range of 1-10m/s.

kuhankeittäjä, I believe that you will like this study.
It is written for people who understand physics.

[baska]

A very short hello to all of you
with relaxing greetings !

Bird Migration on Merchant Ships
https://www.youtube.com/watch?v=TRFyIsX8pq4&t=313s

This ship must be near Greece. At least the cameraman is Greek.

[Anne7]

A very short hello to all of you
with relaxing greetings !

Bird Migration on Merchant Ships
https://www.youtube.com/watch?v=TRFyIsX8pq4&t=313s

This ship must be near Greece. At least the cameraman is Greek.

A wonderful video, Baska!
Smart little stowaways!
Thanks!
Are you on vacation?

[Solo]

... I just wondered if the photo that I found (with title Tal Nature Reserve !) showed the same ponds, photographed from another location. And, if not, which ponds these could be.

very probably Dafna EDIT: correction - Dan

https://goo.gl/maps/trqm1otgSXq



DANGER MINES ! yes, not the calmest area Israeli-Syrian Armistice Line
https://en.wikipedia.org/wiki/Israel%E2 ... Commission,
actually (19 June 2018) https://www.bbc.com/news/world-middle-east-14724842

[Anne7]

very probably Dafna
https://i.postimg.cc/28KgTP9H/DAFNA.jpg
https://goo.gl/maps/trqm1otgSXq

Solo, I think I found those ponds!
Probably in Dan.
See the yellow arrow.

[sova]

A very short hello to all of you
with relaxing greetings !

Hello Baska
Thanks for the video. I asked myself today; where are you ?
Did you forget us ?


Anne, thanks for the short summary of the study ...
Me and Physik

[Anne7]

Anne, thanks for the short summary of the study ...
Me and Physik

Hi, Sova!
I wanted to know how big the circle is in which BS climb up.
My curiosity takes me to these studies. Not a passion for physics. :-)
I also do not understand everything about these studies, but fortunately, my question has been answered.
A diameter of 40 - 45 m is not that much. I expected the circle would be wider.

Still no update on birdmap.

[Solo]

... Probably in Dan. ...

yes, Dan - Dan is also on my (second) pic (with photos these ponds in Dan), only I wrote mistakenly
(Dafna hadn't ponds )
these family was in Tal Nature Reserve, but the photos are views on the ponds near Dan, the area Caviar Galilee (https://i.postimg.cc/nh8rgwCk/Dafne-2.jpg)
also here are in the distance the ponds near Dan

https://goo.gl/maps/mKZq95YpoVn

[Solo]

... Me and Physik ...

Me too
Abstract: ... This paper first presents an overview of our knowledge of the soaring flight and strategy of birds, followed by a discussion of control strategies that have been developed for soaring UAVs both in simulations and applications on real platforms. ... " (I read that on aug. 30 - here from researchgate: https://bit.ly/2PQ1KOs, but that all ... I was searching English words for answering to Treia)

[Michi]

A very short hello to all of you :wave
with relaxing greetings ! D

Bird Migration on Merchant Ships
https://www.youtube.com/watch?v=TRFyIsX8pq4&t=313s

Hello Baska,
thanks a lot for the very nice video! It is amazing! All those cute little birds which most likely enjoy to take a rest. Even an owl was there! But: what is an owl doing at sea? Aren‘t they sedentary birds?!

Still no update on birdmap.

But, thanks to the tracker maps we can see that Maru and Karula are still flying in their feeding areas. Thank god there‘s no need to worry.
BTW: I thought always that doing tracker maps would only be possible when there are also data at the birdmap. Obviously it isn‘t so?

Thanks a lot, Jo and Anne, for the new maps and all for todays reports and interesting pictures!

[Anne7]

BTW: I thought always that doing tracker maps would only be possible when there are also data at the birdmap. Obviously it isn‘t so?

Hello, Michi
Ornitela apparently (automatically?) retrieves new data every 6 hours. (Not at the same time for Maru and Karula, though...)
Birdmap has to be updated (manually) by somebody, I think.
So, if we have no birdmap-update for a long(er) time (or if there are worries), we can now make a tracker map, on request.

[Anne7]

We had an update on Maru and Karula!

MARU
Last data: 11.11.2018
Distance: 6960 km (+ 7 km in 2 days), same area (near Kom Umbu, Egypt)


KARULA
Last data: 11.11.2018
Distance: 4842 km (+ 15 km in 2 days), same area (near HaGoshrim)


TODAY'S SUMMARY

KARL
No new data (Last data: 26.10.2018)

MARU
Last data: 11.11.2018
Distance: 6960 km (+ 7 km in 2 days), same area (near Kom Umbu, Egypt)
1. Weather report on 10.11 at 10:00
Temp: 28 °
Precipitation: 0 mm
Humidity: 20%
Air pressure: 1014 hPa
Wind 100 m - NW (19 km/h)
Wind 250 m - NW (21 km/h)
Wind 500 m - NW (22 km/h)
At 15:00
Temp: 28 °
Wind 100 m - NW (14 km/h)
Wind 250 m - NW (11 km/h)
Wind 500 m - NW (11 km/h)
2. Weather report on 11.11 at 10:00
temp: 28°
Precipitation: 0 mm
Humidity: 20%
Air pressure: 1017 hPa
Wind 100 m - NW (10 km/h)
Wind 250 m - NW (10 km/h)
Wind 500 m - N (09 km/h)
At 15:00
temp: 28 °
Wind 100 m - NW (10 km/h)
Wind 250 m - NW (11 km/h)
Wind 500 m - NW/N (13 km/h)

PÄIKE
No new data (Last data: 07.10.2018)

KARULA
Last data: 11.11.2018
Distance: 4842 km (+ 15 km in 2 days), same area (near HaGoshrim)
1. Weather report on 10.11 at 10:00
Temp: 21 °
Precipitation: 0 mm
Humidity: 40%
Air pressure: 1015 hPa
Wind 100 m - SE (15 km/h)
Wind 250 m - SE (15 km/h)
Wind 500 m - SE (20 km/h)
At 15:00
Temp: 19°
Wind 100 m - E (11 km/h)
Wind 250 m - E (12 km/h)
Wind 500 m - E (02 km/h)
2. Weather report on 11.11 at 10:00
temp: 20°
Precipitation: 0 mm
Humidity: 40%
Air pressure: 1018 hPa
Wind 100 m - SW (14 km/h)
Wind 250 m - SW (12 km/h)
Wind 500 m - S/SW (16 km/h)
At 15:00
temp: 19°
Precipitation: 0 mm
Wind 100 m - SW (09 km/h)
Wind 250 m - SW (09 km/h)
Wind 500 m - SW (09 km/h)


Good Sunday evening, everyone!

[sova]

Maru (11.11.) - Egipt

Weather data - 10:00
temp; 28 °
Precipitation; 0 mm
Humidity; 20%
Air pressure; 1017 hPa

[sova]

Maru (11.11.) - Egipt
Wind data - 10:00
Wind; 100 m - NW (10 km / h)

Wind; 250 m - NW (10 km / h)

Wind; 500 m - N (09 km / h)


Wind data - 15:00
temp; 28 °
Wind; 100 m - NW (10 km / h)
Wind; 250 m - NW (11 km / h)
Wind; 500 m - NW / N (13 km / h)

[sova]

Maru (11.11.)