Goshawk Nest in Riga 2022

Goshawk nests in Latvia
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Bea
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Goshawk Nest in Riga 2022

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The nest of goshawks in this location in Riga has been known since 2016 – it is believed that the breeding couple moved here from another nest about 600 metres away. In the immediate vicinity of the nest there are both industrial objects, the sounds of which can often be heard, and private houses. The tree of the nest is located in a small wet area overgrown with weeds and shrubs. The nest is built in a black alder, which grows on the edge of a ditch. The goshawk has built his dwelling on the remains of a crow's nest. The metal wires twisted in the nest still evidence that the crow was a supporter of durable building materials.

The nest was controlled during this time and the nestlings were ringed in it. This couple, and especially the female, is known among the ornithologists for their special character – she tends to behave particularly aggressively and attack people when they are just approaching the nest. On the other hand, birds are accustomed to people and equipment operating behind the fence in the nearby industrial facility and do not pay attention to them. Interestingly, at the time the female laid her first egg, very close, about 50 m from the nest, a crow couple were building their own nest. Crows are a common food item for Goshawks, but it happens that hawks do not touch other nesting birds near their nest, and they make use of this safety zone.

In 2020 breeding was successful and two nestlings were raised in this nest.
In 2021 breeding was successful and three nestlings were raised in this nest.

The camera system was installed by Ģirts Strazdiņš, Arnis Zacmanis and Jānis Rudzītis. Thanks to SIA “Darba Spars” (https://www.darbaspars.lv) for cooperation!

YouTube camera link:
https://www.youtube.com/watch?v=3x7CFmp5oSo

YoutTube channel of Latvijas Dabas fonds:
https://www.youtube.com/channel/UCIcQwg ... hMBclDJENw

In case the youtube address of the stream should change, you can find the actual one on the channel

Link to Goshawk topic in Latvian Dabasdati forum:
https://forums.dabasdati.lv/viewtopic.php?f=29&t=4230
Nature does nothing in vain (Aristoteles)
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Post by Bea »



Main events

26.03. --- Egg #1 is laid https://www.looduskalender.ee/forum/vie ... 17#p844217

29.03. --- Egg #2 is laid https://www.looduskalender.ee/forum/vie ... 04#p844704

01.04. or 31.03. --- Egg #3 is laid https://www.looduskalender.ee/forum/vie ... 94#p845194

04.04. or 03.04. --- Egg #4 is laid https://www.looduskalender.ee/forum/vie ... 02#p845802
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Post by Bea »



Hi Polly and Emi,

maybe you want to reserve a post here on the first page, in case you would like to document more or different events than I will do in "Main events" post.
You can find it easily back here on the first page and you can edit it the whole season long, as we have no limit about editing here.

I think the only limit is, that you can´t add more than 20 links in one post :puzzled: I hope I am right about this :rolleyes:

:wave:
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Post by Polly »

H44 and H21 in adult dress ... Transitional dress. :innocent:

H44
Ringed as a chick in the nest May 26th 2020. Zasulaukas/Riga
Image

H21
Ringed on May 24th 2020. Škirotava/Riga.
Image

Distinctive drawing of a 'V' in the tail feathers, which continues even after moulting. As the season progressed we noticed that the only female hawklet in the brood (H97) continued this pattern.
Image


This couple got together in 2021. Laid 3 eggs - hatched 3 eggs.
A good season despite the late start.



***

March 17th - Mating in the nest tree. It wasn't observed before - not even after that.
viewtopic.php?p=842614#p842614


***

Four eggs were laid this season.

Summary by @Bea:
viewtopic.php?p=841012#p841012

***

April 6th - Onset of winter... H21 faces a thick blanket of snow and protects the brood.There were four eggs in the nest.
viewtopic.php?p=845985#p845985

***



Emi7 wrote: June 22nd, 2022, 1:37 am
Birth order:

1º Male (M1) I haven't controlled the rings.
2º Male (M2)

These two were born on the same day with about four hours difference and although they have been very equal there has always been a slight advance of (M1) in the plumage.

3º Male (M3)

He was born the next day (about 14 hours later than M2) and in the plumage there has been more difference.

4º Female (F1) H97

He was born about 20 hours after (M3) or something else.
This is the one I call youngest.

They have been together all the time and in many positions and he is noticeably bigger in size than the others but he doesn't always seem that way depending on the position. (Sometimes we have seen something in front of H44 compared to H21 and it seemed bigger but when taking a small step forward and being at the same height the difference is quite a lot).

#1 May 7th - 07:42
#2 May 7th - 11:43

viewtopic.php?t=1071&start=480


#3 May 8th - 05:30

viewtopic.php?t=1071&start=500

#4 May 9th - 05:17 (a bit earlier, it was already dry ... H97)

viewtopic.php?t=1071&start=520

***

May 21st - H44 hatches into the nest in the dark and stays in the nest with its family until the next morning.
A rare event that I have never seen before.
viewtopic.php?p=855044#p855044

***


May 31st - The four hawklets get their rings.
Conducted by Arnis Zacmanis.
viewtopic.php?p=858309#p858309

H97 (F), H98 (M), H99 (M), H00 (M)

Ilze P sent the following message in the Latvian forum:
GT:
A message from Arni Zacmanis:
"Dear members of the forum and viewers of the live broadcast! On July 1, all four baby hawks were ringed in the nest. The color ring H97 was placed on the female, but the owners of the rings H98, H99 and H00 are most likely males, but I could not determine this for sure. Additionally, aluminum rings.During ringing, both parents actively pecked at the top - this is somewhat unusual, because more often only the female is involved in the defense of the nest.
It is interesting that the male flew to the time of ringing with a plucked game in his claws, looked like a black wood thrush, and when he dived, he did not let it go almost until the very end of ringing. Just when I was about to climb down, the game was finally thrown down. Compared to 2021, the babies were ringed younger this year, which is definitely better for the ringer - they didn't try to dig into the hand with their nails yet. The babies have received their "passports", hopefully we will be able to accompany them on their journey, and good luck to them!"


Source:
https://forums.dabasdati.lv/viewtopic.p ... 71#p340871


I find the system by which the Goshawk are ringed in Riga interesting.
Here is an interjection by Imants Jakovlevs also in the Latvian forum:
GT:
"Hello, once again I have a request, if you see a hawk with a ring, try to guess which leg has the black ring. That way we can understand whether it is the same and approximately on which side of the Daugava it is ringed."

Source:
https://forums.dabasdati.lv/viewtopic.p ... 92#p272492

(The old town of Riga lies on the lower reaches of the Düna (Latvian Daugava), the northern suburbs are already on the Bay of Riga (Gulf of Riga))

It seems that depending on the side of the river, the Goshawk wear the black rings on their left or right leg. Or rather, to be ringed.
Because yes, these birds are free and will move beyond the banks and find new territories.


***


15./16. July
A strange juvenile visits the nest - and uses the food that brings H44 to the nest.
Black ring on right leg
viewtopic.php?p=870046#p870046

***

October 28
A strange juvenile hawk brings food to the nest.
No rings.
viewtopic.php?p=881457#p881457

***

November 9
A juvenile goshawk visits the tree on the side branch.
No rings.
viewtopic.php?p=882175#p882175

***

November 20
Juvenile hawk visiting the nest.
No rings.
viewtopic.php?p=882863#p882863

***

November 27
The yearly one-time visit of the marten is coming up.
TÜV has been granted. :D
viewtopic.php?p=883206#p883206
"Throw your heart across the river and swim after it."
Indian proverb
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Post by Polly »

Descendants of H21 & H44


Sightings are put together on this portal, among other places.

This portal is also the source of the sightings listed:
https://dabasdati.lv/lv/observation/3d4 ... afcp4mv25/

The best known is probably H92.
Male hatched 25 or 27 May 2021

H92, 2022
Image
(Foto by Edgar Trops)

February 2023
Image

Already starting his own family in 2022:
H92 and his female L25:


(Video from Edgars Trops)

viewtopic.php?p=843242#p843242

Thanks Grieta and Emiliano for the Informations! :2thumbsup:

H92 ~ current sighting February 2024
viewtopic.php?p=916860#p916860


***

H97, only female chick out of four chicks in 2022 season.
High probability that we saw her here on October 15, 2022 in the very best condition when she visited the native nest.

Image


viewtopic.php?p=880695#p880695


***


Ancestors:

C86, father of H44, was sighted in this nest 20 & 23 March 2021:
viewtopic.php?p=874044#p874044

GT
C86 was ringed as a baby in the nest at Matīsa Cemetery on May 18, 2018. Imants Yakovlevs rang. My first ringed hawk hen.
In 2019 and 2020, it nested in the nest of Camera's neighbors, 1 km from this nest.
It was "home" a week ago and I think it will nest there this year as well. Thoughts flew by and sat down to rest from crow hunting. Hawks usually hunt up to 3 to 4 km from their nest.
source:
https://forums.dabasdati.lv/viewtopic.p ... 79#p272479



@Emiliano about the ancestors of H21:
Thank you very much!

A42 First generation controlled.
He was born in the Bolderaja Cemetery (north of Riga, on the left of the Daugava).
It breeds in Bikernieku, Keguma Street (near the historic center of Riga, a little further east, on the right side of the Daugava River).

C67 daughter of A42, female.
Born in Bikernieki, Kegma Street.
It breeds in the New Jewish Cemetery at Lake Babelite (northeast of Riga).

F41 daughter of C67 , granddaughter of A42 , mother of H21. Feminine.
Born in Lake Babelite, Cemetery.
It breeds in Skirotava, near the old prison.
(south of Riga, on the right of the Daugava). In 2020.

H21 daughter of F41 , granddaughter of C67 , great-granddaughter of A42 , female.
Born 2020 in Skirotava (South Riga, on the right bank of the Daugava).
Breeding in Dzirciems (with H44) 2021, 2022
(Middle West Riga, left the Daugava).

***
H92 son of H21 and H44 in 2021, male.
Born in Dzirciems (Darbaspars, chamber).2021
Breeding in Kengarags (South Riga, on the right side of the Daugava).2022

literature:
https://jauns.lv/raksts/maja-un-darzs/4 ... no-paaudzi



So far no sightings (of which I am aware) of the other remaining offspring of the couple
February 2023
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Post by Polly »

Many thanks Bea for your quick opening of the topic and your efforts!
:2thumbsup: :innocent:

Thank you also for the offer that we may reserve.
I've kept one placeholder for me and one for Emiliano, since I'm starting the documentation now, but I'd like Emiliano to have a separate place for his eventual additions (stats, etc.).

If in doubt, I remove it again.

Thanks!
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Post by Polly »

March 9th
Emi7 wrote: March 9th, 2022, 1:24 pm Here again with the Goshawks.

6:03:27 Sounds of dawn, it is still confirmed that the two H's are there.

Greetings and thanks for the transmission. :loveshower: :loveshower:
Emi7 wrote: March 9th, 2022, 1:49 pm 13:29:43 / 13:30:53 / 13:33:40 / 13:34:07 Sounds

13:36:37 Pairing.

They are both there, to see if they let themselves be seen.
[/quote
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Post by Polly »

Emiliano, I heard the call at 06:03 with great joy!
I was on my way to work and it made me feel good! :innocent:

The nest is really not what I expected.
I was scared - yesterday.
H21 & H44 are now an established couple. By this time last year they were probably just in the bonding/finding phase as a new couple.
And actually they present an incomparable speed!
At least I 'expected' a little more preparation of the nest.

But well...it's our H's.
Not so well known as loving nest builders. :mrgreen:
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Post by Polly »

10:08 - 15 A familiar situation - angry gurgling. The crows tell us about the presence of the Goshawk.

The stream is jerky.
I hope we don't lose him again.
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Post by Polly »

10:33:54 - 34:04 Sure, close... H44?
13:36:37 Pairing.
However. :shake:

14:59/15:00 soft sounds

15:51 Our H's are talking. :innocent:
Even a season later, the couple still communicate in a very special and unmistakable way.

I try no video.
Just following the stream is terribly exhausting.

16:05 - 07 to hear both.
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Post by Polly »

16:11 H44 puts a branch in the nest.
'Gjak' ...and on the side branch.

Image

Image

Climb higher, all the way to the top.

16:14 H44 leaves the branch towards the industrial area.

Hey, the nest is taking shape. :mrgreen: :rotf:
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Post by Polly »

17:05 H21 - with power and volume into the nest. :2thumbsup:

Image

Image

Image

She doesn't move much at the nest either.
I almost felt like she was getting to know the nest anew.

H21 jumps onto the side branch, then exits the tree.
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Post by Polly »

It's fascinating that we can distinguish H21 and H44 despite their new plumage. Her nature, her way of expressing herself (key and voice colour) and the jagged movements of H44 have not changed. :innocent:

Their breast feathers are in transition from drops to ribbons. Very interesting to see. Characteristically, her eyebrows have hardly changed.
H44 has a faint stripe to the back of his head (he'll also likely wear a heavy dark hood), while H21 still has shorter but wider eyebrows.

H44

Image

H21

Image


I'm really happy to see these two again. :innocent:
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Post by Polly »

March 10th

:hi:

This is not for the impatient today...
The stream stutters through hours without Goshawk.

Not quite ...

10:10 Shouts can be heard close by.

But we have lots of cute little birds busily combing through the nest.
Great Tits, Hawfinches... :innocent:

Image

Image

Image
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Post by Polly »

Ha, while I write:

12:47/48 to hear an excited H.
I think H21.

Also

12:49, '52
The calls are interrupted by the stuttering of the stream. What I heard were quick, short calls.
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Post by Polly »

12:54 A Goshawk flies past the nest tree from the left towards the industrial site.
Then two votes I think.
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Post by Polly »

13:53 H21 in the nest
She calls and gets answer from H44 outside the nest. :innocent:

Image

Image

H21 jumps onto the side branch, climbs back up to the top.

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Post by Polly »

13:14 H44 flutters into the nest. H21 is still at the top of the branch.
Image

He calls tenderly, moves branches.


(sorry for the dropouts)

H21 comes down from above, H44 leaves the nest.

H21 starts building the nest. Very nice to see. :2thumbsup:
Then she jumps back onto the side branch, calls.

Image

13:20 out, calls.
"Throw your heart across the river and swim after it."
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