Dyfi Osprey Project

[Ferenz]

THX Seira for keeping us updated...

[seira]

Aeron/Z2 and Blue 014

May 1

https://www.facebook.com/BywydGwylltGla ... 413902445/
Great news from the Friends of the Ospreys Pont Croesor nest.
Z2/"Aeron" and Blue 014 are back for their second breeding season together on the Pont Croesor nest. We are delighted to announce that Blue 014 laid her first egg around 19.50 on Friday 29th April.
The new hide at the Glaslyn Osprey Visitor Centre provides an excellent vantage point of the nest.


Ferenz

[seira]

May 3

https://www.facebook.com/dyfiospreyproj ... 456487348/
Bore da
He may not be the best with home furnishings or domestic diplomacy, but Idris has exceptional talon-to-eye coordination.
The Idris Mullet Grab...

May 2

https://www.facebook.com/dyfiospreyproj ... 613069175/
Bore da
We'd heard reports of Idris deploying unusual tactics to get Telyn off the eggs again this year, so keen is he to incubate.
So, this morning we sent an osprey surveillance team up to the nest to film in high resolution, to see whether this allegation was true. This is what they recorded...

[seira]

May 4

Idris, OMG

[seira]

May 5

https://www.facebook.com/dyfiospreyproj ... 6419773855
BREAKING: TEIFI (2020) IS ON HIS WAY HOME!!!!!
He's in Santander, northern Spain.
Many thanks to Carlos Sainz who photographed him and to Valerie for letting us know.
Safe journey home, son. Eyes down and look up..

https://www.dyfiospreyproject.com/blog/ ... s-way-home




May 6

https://www.facebook.com/dyfiospreyproj ... 2946268869
Bore da
So, we're into the window now of two-year olds returning (they usually return to the UK in May onwards of their second year).
However, many three-year olds are back already and actively looking for mates and nest sites.
Here's Roli visiting the Dyfi nest yesterday. Roli is Blue 24's son (2019) from the Llyn Brenig nest. Telyn looks really pleased to see him.
No bad this camera you bought...

[seira]

May 7

https://www.facebook.com/dyfiospreyproj ... 2009259296
HERE THEY COME!!!
The first of the Welsh two-year olds..... This is Blue 551 (2020) from the Clywedog nest around 12 miles away from the Dyfi.
They had a three-male brood that year - hopefully his brothers are not far behind.
(There are plenty of nest sites in Wales).
Keep Calm and Look Up 👁👁



Telyn : Why do they always come here first ?


May 8

https://www.facebook.com/dyfiospreyproj ... 239084908/
Thanks to the amazing 360 Observatory at DOP and seven high resolution cameras, we can now spot, anticipate and record intruding ospreys like never before.
Here's a typical intruder event from yesterday - Clywedog's Blue 551

[seira]

Dinas/KS6 and Blue 019


May 11

https://www.facebook.com/BywydGwylltGla ... 3044695601
Good news!
Glaslyn Ospreys welcomes the exciting news that another pair of ospreys is breeding on private land in an undisclosed location in the Glaslyn Valley. The female, who laid her first egg on Monday, is a translocated Poole Harbour osprey from 2019 and the male is KS6 (Dinas) fledged at the Dyfi nest in 2018. This is great news – congratulations to everyone at Poole Harbour and Dyfi!
We are delighted that another Friends of the Ospreys platform has attracted yet another pair of birds to the Glaslyn Valley.




May 10

https://www.facebook.com/BirdsOfPooleHa ... 8014080938
We have very exciting news to share: 019, a female translocated in 2019, is on a nest in Wales and she laid her first egg yesterday! She has paired up with a male, KS6 (Dinas) who fledged from the Dyfi nest in 2018. The nest is in the Glaslyn valley, not far from the site at Pont Croesor, where 014 and Z2 (Aeron) are nesting again and have also been incubating since last week.
This means that we have three translocated Ospreys back in the UK, all now on nests and incubating. This is a huge milestone for the project, and we have put together an overview in our latest update: https://www.birdsofpooleharbour.co.uk/o ... -breeding/
Big thanks to Friends of The Ospreys (Welsh Osprey) for the photos and for keeping us updated.


Birds of Poole Harbour https://www.facebook.com/BirdsOfPooleHarbour

[seira]

May 12

https://www.facebook.com/dyfiospreyproj ... 0557787441
Two of today's intruding 'Danglers' to show you this evening:
1. Roli – (Blue KA5). He's Blue 24's son from 2019; Llyn Brenig nest.
2. Blue 551. A 2020 male from Clywedog nest. Interestingly his brother turned up today at his home nest too - Blue 550. Will they get all three brothers from 2020 returning?
It's a week now since Teifi was spotted on the north Spanish coast - so due home sometime over the weekend

[seira]

May 16

Idris : feather pulling...

failed

Idris : how about stick and pulling

[seira]

Telyn : ......



Telyn : fine, you got on the eggs

[seira]

May 17

https://www.facebook.com/dyfiospreyproj ... 6866430810
BERTHYN IS IN SCOTLAND!!!!!
She (Blue KA1) was photographed in Scotland last May carrying a fish, she would have been two years old then. Hopefully she's back again this year looking for nest sites and mates.
Berthyn was a HUGE bird in the nest in 2019, weighing 1790g - both her brothers that year, Peris and Hesgyn, weighed in at 1370g and 1330g. Hesgyn was spotted back at the Dyfi last year so the news of Berthyn having made it back makes 2019 the first year ever that we've had more than one bird back from the same brood. Just need Peris for the hat-trick now.
Here's a photo of Berthyn in 2019 at the Dyfi nest, hopefully we'll have permission to share the photo from Scotland for you soon.
Berthyn is Monty and Telyn's last ever daughter together - his legacy lives on

[seira]

May 18

https://www.facebook.com/dyfiospreyproj ... 3742850789
Bore da
We promised we'd let you have the updated Dyfi osprey Family Tree we've been working on (thanks Jonah).
It shows every single bird since breeding started on this nest in 2011, including a short summary of all those offspring that have returned as adults. You can see now the value of naming each bird; remembering leg numbers alone is a nightmare!
At least one offspring from every year since 2013 has been re-spotted as an adult - nine birds in all (NB: not one middle chick has ever returned - what are the odds of that!).
Seven are male and two female.
Of these nine birds we know that at least five have gone on to breed: one in Scotland, one in England and three in Wales.
Females are far less conspicuous in their behaviour than males, meaning they are always under-recorded - there will be a corresponding number of females out there, we just haven't seen them; exactly as Berthyn demonstrated to us yesterday.
Right click and save for your records


https://up.picr.de/43631193ti.jpg (1920X1433)

[seira]

May 19

https://www.facebook.com/dyfiospreyproj ... 6842555479
Bore da
Our latest ringed intruder is ‘Denwick’ from Kielder, Northumberland (Blue 211 - photo below taken yesterday). Many congratulations to them.
She was our 6th ringed intruder of the year identified at the Dyfi nest and the second two-year-old. C'mon Teifi...!
The record, if you’re wondering, is 12 ringed intruders identified in one season (2020). We have a good chance of breaking that record this year.
1. Blue JT9, 5th April. Scottish female (2019).
2. Blue KS7, 26th April. Clywedog male (2018). Visited in 2021 also - with his sister, KS8.
3. Blue KC1, 2nd May. A 2019 male from private north Wales nest (ON4).
4. Blue KA5, 2nd & 5th May. This is 'Roli', Blue 24's son from Brenig (2019)
5. Blue 551, 7th May. A Clywedog male (2020) - the first of the two-year-olds.
6. Blue 211, 18th May. This is 'Denwick', a Kielder (Northumberland) female (2020).

[seira]

May 22

https://www.facebook.com/dyfiospreyproj ... 8394939657
Bore da
We have the photo of Berthyn we promised you!
Here she is.... Please take note this was taken in May 2021, near Kinross, Scotland.
Q. Why do we see more male ospreys than females returning?
A. The male and female osprey reproductive ratio is 50:50 and their mortality rate is about the same too, so there will be no differences in the numbers of males and females on a population level.
In total this century, 29 Welsh osprey offspring have been re-spotted back as adults - 31% (n9) of these from the Dyfi nest. Of these 29 Welsh returnees, 76% (n22) have been males, but only 24% (n7) have been females. So what accounts for this disparity?
In a word: Behaviour.
Males are much more nomadic when they are back as two and three-year olds, visiting various nests, many of which have cameras (in Wales - four in all). We have the old philopatric behaviour to thank for this.
Females are, on the whole, less mobile. They will be less conspicuous to us humans, preferring to look out for males on nests that are advertising for a female vacancy.
You also have the 'Scottish factor'.
If females returning to Wales don't see a vacancy, rather than hang around in their ancestral colony as many males do (this is the philopatry bit - Aeron, Tegid, Dinas etc..) they will keep on moving (north mostly) until they find an eligible male. And that usually means northern England or Scotland.
Some of the forests in Scotland are absolutely massive. Once a female starts to breed there, the chances of spotting her is remote at best.
Just look at Telyn's behaviour right now.... If she was nesting deep in a national park in Scotland with no roads or access, she would never be found.
So - if there are 22 Welsh males accounted for as having returned as adults - the laws of probability tells us there will be a corresponding number of females. We know of seven, so chances are there are another 15 or so out there (22 - 7).
Thing is, they are incredibly difficult to spot.
Many thanks to Peter Brown for his great image of Berthyn taken last year. If she has settled down as a three-year-old and is breeding this year, we may never see her again. Very best of luck to you Berthyn.
You may possibly hear her though

[seira]

May 23

https://www.facebook.com/dyfiospreyproj ... 1777922652
Another day, another dangler!!
Blue KC8, 23rd May. A 2020 male - Tegid's son from private north Wales nest. Many congratulations!
This is the 7th ringed intruder this season to be positively identified on the Dyfi nest.

[seira]

KC8

[seira]

much like Monty

[seira]

May 24

crack !!

[Ferenz]

1st hatch has begun...

[seira]

May 25

https://www.facebook.com/dyfiospreyproj ... 1383938358
Almost out!!
C'mon little one............




Dyfi Osprey Project :
​1st Chick Hatched - 16:28, 25th May.

chick is right in front of Telyn





Ferenz