Falcons, Kestrels Around the World

[Ferenz]

Hobbie falcon in Dorset, UK: 2 newly hatched chicks. First egg hatched 7/5, but 3rd won't hatch, looks like the third chick perished during the hatching process...







https://www.youtube.com/watch?v=Y01cvsbNyKo

[Liz01]

367 Collins Falcons

Sad news! The season is over
Falcon Fact Sheet (FFS 04/23)
Unofficial!

By Victor Hurley:
Greetings 367 Collins Falcon Watchers,
Events at the small nest box have progressed to a point where I think it is highly unlikely that this year’s clutch will hatch. The following is a collection of my thoughts based on the vision and observations/comments that have been made to date.
In my recent post I offered four possible (most likely) scenarios as to why the female (F22) has not been incubating properly over the past 2-3 days/nights. As robust and hardy as the eggs and embryos within can be, there are still physical/physiological limits beyond which nature cannot tolerate. Generally, they do tolerate cooler temperatures better than hotter temperatures. The key determinant I have read from the literature is the temperature gradient. That is how great the difference is between ambient and internal egg temperature.
If people can refer to Falcon Fact Sheet 02-23 the ideal egg temperature range is 35 - 40.5°C. In eggs subjected to below 35°C down to 27 °C the embryos that spend too much time* in this zone can develop unevenly, leading to crippling injuries or death. Successful hatching is greatly reduced. Then, below that, a temperatures from below 27°C to -2°C “eggs don't develop at all once incubation has begun”.
If the internal temperature of these eggs have dropped below 27°C
then it is most likely (almost certain) the eggs will not hatch.
The intermittent incubation behaviours of F22 (last night (7-8th Oct) F22 stood over the eggs for the last seven hours from ~11:00pm to ~6:00am not incubating properly) and the long absences if either adult (up to 4hours 40 minutes) suggests both adults sense that the eggs themselves are already non-viable. That is they are already dead.

As I write 10:30pm, 8th Oct, 2023 no adult has been on the eggs since 6:39pm. That’s again another four hour stint and counting without incubation. More significantly, F22 has been sitting on her
perch at the other end of the nest ledge tonight after sunset for over 2 hours and has shown no sign of attempting to incubate her eggs.
I must say the female (F22) does look more than a little “worse for wear” over the past few days and way beyond looking “windswept and interesting!” to me. That and her current lack of interest in
incubating her own eggs speaks volumes to me. I am going to say “she knows something I don’t” about the state of her eggs. The urge to incubate those eggs (by both parents) a week out from the likely hatching date(s) should be so strong that baring physical separation, death would normally be the only thing keeping them from covering those eggs.
This pair may have ongoing sporadic stints of incubation from time to time over the next few days but I think the end is going to be the same. Four unhatched eggs in various positions in the nest box.
I don’t think these eggs are going to hatch this year.
*The literature does not specify what “too much time” actually means.
--//--

October 8th.


October 9th. male is incubating right now.

[Liz01]

367 Collins Falcon FB Watchers:

Victor Hurley wrote:
To all of the Group members (new and old) 2023 is going to be a short season at this site. The purpose of the live feed and this fb group is observing and learning about Peregrine Falcons breeding in this highly urbanised environment.
Having discussed with the moderators and Mirvac (building owners) it has been agreed the live stream with be switched off this Friday, 13th October, afternoon. This is because these eggs are not going to hatch.
I look forward to a more interesting and rewarding season in 2024 when the live stream will be switched on again once the first egg for that season is laid. Set your timers for late August, 2024!
Once the live stream is switched off posts for this fb Group will also be switched off until next year.
Thank you all for your interest and shared passion for this project.

this will be the last video! I really hope that F22 recovers and everything ends well for her & her mate. I hope for a better season 2024.

[Liz01]

October 13

she flew off from her favorite place


Dad brings a prey for Mum



Victor Hurley wrote:
In closing out the "2023 season", this is a brief statement update on the status of F22 and the eggs in the nest box.
F22 has been looking a lot more alert and is still carrying some head injuries. She appears to have her right eye fully open more often. However, she has continued to be less than interested in maintaining the necessary regime for successful incubation of her eggs. The eggs have had been left exposed too long at temperatures well below the critical 27 Deg C to have survived. These four eggs are not going to hatch.
Sometime this afternoon Mirvac will switch off the webcam and posting for this fb Group will be closed.



camera switched off .. I hope for a better season next year.

[Polly]

November 19th


There are some interesting ways to watch falcons. One of them is located on the site of a waste incineration plant in Bonn, Germany.

Pair bonding and nights together can already be seen in the box.







November 14th

Der Hintergrund.
Seit einiger Zeit nisten Turm- und Wanderfalken an
der MVA. Dafür haben sie sich sowohl Nistkästen
am Schornstein wie auch verschiedene Nistkästen
an der Dachkante ausgesucht. Letzten April hatten
wir sogar das unglaubliche Glück, dass das
Wanderfalkenpärchen Nachwuchs bekam
Daher haben ein paar Kollegen der M-Werkstatt in
2021 den Nistkasten erheblich vergrößert und noch
artgerechter gestaltet. Der neue Nistkasten ist an der
Dachkante in Richtung Schlachthof installiert
worden.
Mit 300 km/h sind Wanderfalken die schnellsten
Tiere der Welt und wenn auch weit dahinter erreichen
Turmfalken rund 50-70 km/h. Beide Greifvogelarten
sind für das Ökosystem von großer Bedeutung
Daher sind wir froh, dass sich die MVA als Zuhause
für die schonen Tiere etabliert hat. Zusammen mit
unseren wilden Wiesenflächen bieten wir damit
zahlreichen Lebewesen ein Habitat trotz der sehr
urbanen Umgebung.

GT

The background.
Kestrels and peregrine falcons have been nesting for some time
the MVA. That's why they have nesting boxes
on the chimney as well as various nesting boxes
selected at the edge of the roof. Had last April
We are even incredibly lucky to have that
Peregrine falcon pair had offspring
That's why a few colleagues from the M-Werkstatt...
In 2021 the nesting box was significantly enlarged and still
designed to be more species-appropriate. The new nesting box is on the
Roof edge installed towards slaughterhouse
been.
At 300 km/h, peregrine falcons are the fastest
Animals of the world and even if far behind them
Kestrels around 50-70 km/h. Both species of birds of prey
are of great importance for the ecosystem
We are therefore happy to have the MVA as our home
established for the beautiful animals. Along with
We offer our wild meadows
a habitat for numerous creatures despite the very
urban environment.

[Polly]

Oops...

November 16th

[Polly]

Unfortunately, both live streams do not have a time slot.

Transfer out of the box:
Live:
https://www.youtube.com/live/bgVjqV2z9n ... B2PVOHvknr

Exterior view:
Live:
https://www.youtube.com/live/xa3PwsCqY_ ... UWIO_Heau7

Today November19th





More:
https://youtube.com/@greifvogeldermvabo ... vHoDWYqRdL

[Polly]

Today from the outside camera:

[sova]

Polly and all


https://lebensraum-burg.de/Wanderfalke/Webcam
Nürnberg

[Polly]

@sova
There are a lot of transmissions going on right now, aren't there?
It is hardly possible to decide.


There was another date in Bonn this evening, but the male then disappeared again. I had the feeling that the female was pushing for it. And I would be interested to know why both partners so often stay in the same position for minutes at a time. As if they are “ready to pounce”….




... well-fed


But it seems that established couples actually have an urge to care for their partners. And it doesn't always have to be spring.

[Chimega]

Use Caution!

Great Spirit Bluff, La Crescent, Minnesota, USA, 04-12-2024

Lisa is the current resident, allegedly. Another female or multiple females have been attempting to take her place as Savannah was killed by the Great Horned Owl last year. Lisa and one other female fight to the death, but thank goodness the other female finally got away. This is rough to watch. I have never seen Peregrine Falcons fight this hard with each other, before.




Cameras at explore.org

[Ferenz]

Hobby falcon UK, Dorset 2024:

3 eggs have been laid which is a normal clutch size for hobbies.
Egg 1, 2nd June 6:47 pm
Egg 2, 5th June 6:46 am (60 hours)
Egg 3, 7th June 8:04 pm (61.25 hours)

Two hatches by now







https://www.youtube.com/watch?v=-20l7St4g8o

[Fleur]

ah, they are beautiful.
Thanks for the link Ferenz

[Ferenz]

Dorset, UK Hobbie falcons: The youngest chick unfortunately did not survive





Feed of only hobbie chick

[Ferenz]

Zuerich Hochkamin: New peregrine falcon has arrived

https://www.youtube.com/watch?v=KeuVUgwQtSI





https://www.youtube.com/watch?v=MbV-hopuoJY

[Ferenz]

Zuerich male kestrel

[Ferenz]

[Ferenz]

Zuerich peregrines: Banded female & unbanded male?

[Ferenz]

Zuerich Peregrines: Female & male bonding video by Terka (Poland)





https://www.youtube.com/watch?v=A6UEM0uNi7s

[Ferenz]

Zuerich kestrels: Two males around & one female