Timeline 2008-2018


31 January: Blue Y6, 2016 Nest 2 female offspring, youngest of three, seen again at Tanji Bird Reserve, The Gambia

21 February: Blue 6L, Acomb, 2017 Nest 3 female, youngest of three offspring, seen at Kafoutine in the Casamance region of southern Senegal

2 April: UV began his 3rd Spring migration
22 April: UV arrived in England

26 April: Blue Y1, 2016 male from Nest 1A photographed at Urdaibai Bird Center, Spain
7 May: Blue Y1 photographed at Portland Bill
8 May: Blue Y1 landed on Nest 1A, his natal nest

July: Nest 5 is found, a natural nest, with one chick seen. It died at about 3 weeks old

11 August: Blue VW, 2015 Nest 3 female, visited a new platform in Kielder Forest
31 August: 2011 Nest 1 male Blue 39 seen at Derwent Reservoir

19 October: 2018 Nest 3 Blue 224, Bywell, was seen at Tavira, SE Portugal

16 November: first Winter 2018 photos of 2014 Nest 1 Blue UV
21 November: first data since March from 2017 Nest 2 7L/Aln’s transmitter

20 December: Blue Y6, 2016 Nest 2 female, was seen at Bijoli Islands, near Tanji, The Gambia

Nest 1A
7 April: White YA arrived at 15.36
9 April: Mrs YA landed at 16.31
24 April: first egg laid overnight
26 April: egg 2 laid at 13.23
29 April: egg 3 laid at 10.33
1 June: chick 1 hatched at 12.17
chick 2 hatched at 17.15
4 June: chick 3 seen after 08.00
11 July: the chicks were ringed and named after Northumbrian places/features. Chick 1, male – Blue 223/Broomlee, chick 2, female – Blue 221/Byrness, chick 3 female – Blue 222/Binky
23 July: 223/Broomlee not on nest all day, only returned on 25 July
24 July: 221/Byrness fledged successfully
30 July: 222/Binky fledged
24 August: last sighting of Mrs YA
25 August: last sighting of 223/Broomlee, 85 days after hatching
3 September: last sightings of 221/Byrness and 222/Binky
17 September: last sighting of YA

Nest 2
4 April: White EB was perched on the nest edge when streaming began
5 April: Yellow 37 landed at 08.43
25 April: egg 1 seen at 09.22
27 April: egg 2 laid at 13.41
30 April: egg 3 laid at 14.05
2 June: egg 1 hatches c17.38
5 June egg 3 hatches c14.30 – chick 2
between 19-24 June: one of the chicks on Nest 2 died
10 July: the female chick was ringed Blue 5L/Bamburgh
25 July: 5L/Bamburgh fledged at 16.38
21 August: last sighting of EB
11 September: last sighting of 5L/Bamburgh
12 September: last sighting of 37

Nest 3
16 April (probably): Nest 3 female returns
Bonding with an unringed male starts
3 May: egg 1 seen at 08.55
7 May: egg 2 confirmed, probably laid am on 6 May
8 May: egg 3 laid between 13.00 and 16.00
9 June: egg 1 hatched late evening
11 June: egg 2 hatched early afternoon
17 July: the female chicks were ringed, Blue 224/Bywell and Blue 225/Blackaburn
3 August: 224/Bywell fledged at 07.07
5 August: 225/Blackaburn fledged by 07.19
18 August: last sighting of the female
29 August: last sighting of 224/Bywell
3 September: last sighting of 225/Blackaburn and her father

Nest 4
6 April: Mrs 69 was on the nest late afternoon
7 April: Blue 69 was on the nest mid-morning
23 April: first egg seen at 09.12
25 April: egg 2 is laid at 13.11
28 April: egg 3 is laid at 09.50
31 May: egg 1 hatched at 15.41
egg 2 also hatched, shortly after 16.50
2 June: egg 3 hatched at 10.32
14 or 15 June: chick 3 died
10 July: the chicks, both male, were ringed. Chick 1 is Blue 228/Beldon, chick 2 is Blue 227/Belling
late July: the chicks fledged successfully, dates not known
25 August: last sighting of Belling, 86 days after hatching
29 August: last view of Mrs 69, delivering a fish to Beldon
3 September: last sighting of 228/Beldon
4 September: last sighting of 69


mid April – Blue 7A is photographed at Esthwaite Water, offspring of 2010 Kielder 
female Blue 35 who breeds at Foulshaw Moss
30 April – UV reaches England on his second Spring migration
1 May – UV intrudes at Kielder
5 May – Blue 8H, 2014 Nest 2, is seen intruding at Balgavies Loch
12 June – Blue W0, 1st male offspring in 2015 of 37 and YA’s mother/Aran at Glaslyn, lands on Nest 1
1 August – 2012 Nest 2 male Blue 2H lands on the Bassenthwaite nest
7 August – UV lands on Nest 2
29 August – 2010 Nest 1 female Blue 35 seen on migration at the Aguilar de Campoo reservoir in northern Spain
5 September – 2012 Nest 2 male Blue 2H seen on migration at the Cávado River estuary, Fão, in Portugal
8 September – UV began his third Autumn migration
3 November – Blue Y6, Nest 2, 2016, photographed in The Gambia

Nest 1A

26 March – YA returns at 13.23
29 March – Mrs YA is on the nest when streaming started at 10.00
10 April – first egg laid at 12.11
13 April – second egg laid, probably about 11.51
16 April – third egg probably laid before noon but three eggs first seen on 18 April
19 April – FOURTH egg seen, 2nd year in a row for the pair
When the nestcam was repaired, 3 chicks were on the nest. Chick 3 was probably the non-survivor
26 June – chicks ringed and named after Northumbrian places
two females (Blue Y9/Amble, Blue 8P/Ayle) and a male (Blue 6P/Acton)
19 August – Blue 8P/Ayle flew from Nest 3 in the evening, probably began migration on 20 August
30 August – from limited field observations over several days, both Y9/Amble and YA appear to have migrated
6P/Acton was never seen after the fledging period

Nest 2

31 March – 37 is on the nest when streaming started at 10.00
2 April – EB returns
16 April – first egg laid at 14.48
19 April – second egg seen at 10.22, probably laid earlier that morning
22 April – third egg laid pre-nestcam streaming
24 May – first hatch by 08.00
25 May – second hatch late afternoon, time 16.56
The 3rd egg did not hatch
30 June – chicks ringed and GSM/GPS transmitters fitted
a male (Blue 7P/Alnwick) and a female (Blue 7L/Aln)
3 July – Alnwick was euthanised after suffering a severe wing injury
20 July – Aln fledged at 11.08
21 August – last sighting of EB
9 September – Aln migrated soon after 11.15
11 September – last sighting of 37 at 13.07

Nest 3

31 March – the female is seen on the nest
8 April – the male is seen on the nest
24 April – first egg laid between 15.00 and 18.00
27 April – second egg laid 14.08
30 April – third egg laid by 11.40
31 May – first hatch between 08.00 and noon
2 June – second hatch before 07.00
4 June – third hatch before 07.00
13 July – chicks ringed, chick 1 female, Blue 9L/Archer, chick 2 male, Blue 4L/Ancroft.
chick 3 ?female, Blue 6L/Acomb
25 July – Ancroft had fledged before 07.00, probably previous day
28 July – Archer fledged between 08.00 and noon
30 July – Acomb fledged, probably at 07.55
29 August – last sighting of 4L/Ancroft at 19.00
30 August – 9L/Archer began her migration at 09.44 GMT, 6L/Acomb last seen at 19.00

Nest 4

8 April – the female landed at 11.55
9 April – Blue 69 lands with a fish at 10.07
21 April – first egg laid at 16.17
24 April – second egg laid at 12.21
27 April – third egg laid at 11.09
30 May – first egg hatches at 14.26
31 May – second egg hatches at 10.08
1 June – final hatch shortly before 16.28
9 June – chick 3 died early morning or previous evening
5 July – chicks ringed, a male, Blue 8L/Aydon and a female, Blue 3L/Alwinton
24 July – Aydon fledged at 08.36
28 July – Alwinton fledged at 16.38
26 August – last sighting of Mrs 69
1 September – last sightings of 3L/Alwinton and 8L/Aydon late morning
3 September – last sighting of 69 at 14.39


9th April –  Blue 39 aka Bracken (Nest 1, 2011) lands on Nest 2 and later presents White EB with a fish. The second record of a Kielder born osprey returning to the natal area
13th April – Blue 2H (Nest 2, 2012) lands on Nest 1
9th June – after a long first Spring migration Blue UV, 2014 Nest 1, returns to the UK
20th June – Blue UV spends the day in Kielder Forest
1st July – Blue UV lands on his parents’ nest, Nest 1A
10th Sept – after a summer in N England UV migrates

Nest 1/1A

26th March – YA lands with a fish at 09.50 and intruder Blue HV takes it.
                         Mrs YA lands at 12.42, Blue HV isn’t seen again
Early April – YA/Mrs YA move to new platform
19th May – first hatch
20th May – second hatch
21st May – third hatch
22nd May – fourth hatch
28th June – the chicks were ringed, two females Blue Y0 and Y3 and two males Blue Y1 and Y2
13th July – Y1 fledges at 12.15
14th July – Y2 fledges at 11.29
before 08.00 15th July – Y0 fledged out of camera streaming hours
19th July – Y3 fledges a2 11.06
10th August – last sighting of Y2 (82 days old)
16th August – Mrs YA last seen
24th August – last sightings of Y1 and Y3
25th August – last sighting of YA

Nest 2

24th March – 37 returns to Nest 2 at 11.03
3rd April – an afternoon of intrusion by four ospreys ends with White EB staying
22nd April – egg 1 seen at 09.43 (the nestcam stream began at 09.30)
25th April – egg 2 seen at 09.49
28th April – egg 3 laid at 09.54
29th May – first hatch shortly before 08.00
31st May – second hatch before 08.00
2nd June – third hatch at about 13.06
6th July – chicks ringed, all female, Blue Y4-6
Between 08.25 on 21 July and 15.00 0n 23 July – Blue Y4 and Y5 fledged
By early on 28 July Y6 was observed flying
20th August – last sightings of EB and Y5
23rd August – last sighting of Y4
13th September – last sighting of Y6, probably left early the next day
14th September – last sighting of 37

Nest 3

27th March – the female returns
31st March – both ospreys present on the nest
16th April – one egg visible
19th April – two eggs visible
23rd April – three eggs visible
23rd May – first chick seen
25th May – second chick hatched about 15.50
30th June – the chicks were ringed, female Blue VH and male Blue VR
17th July – male Blue VR fledges between 11.15 and 15.00
18th July – female Blue VH fledges, probably in the afternoon
12th August – last time the female was seen on footage
24th August – VH probably migrated
3rd September – VR probably migrated

Nest 4

mid-May – pair incubating
9th  June – at least one hatch
6th  July – two chicks visible, about 28-30 days old
18th July – the chicks were ringed, both males, Blue Y7 and Y8
5th August – Y8 fledged early morning, Y7 had also fledged
8th September – Y8 data ceased
11th September – the ospreys had migrated before this date


14th April – Blue 1H (Nest 2, 2012) lands by her grandparents’ nest at Glaslyn!
25th April – HISTORY IS MADE! Blue 2H, born on Nest 2 in 2012, lands on Nest 3. The first record of a Kielder youngster returning to the natal area.
27th April – Blue 2H lands on Nest 1
1st May – Blue 1H lands next to the Glaslyn nest again and ‘Granny’ still isn’t welcoming
2nd May – Blue 2H lands on Nest 3 again
15th May – Blue 2H lands five times on Nest 1

Nest 1

2nd April – White YA lands on his nest at 14.59
9th April – Mrs YA lands at 09.25, probably arrived home earlier
17th April – 13.23, first egg for Nest 1
20th April – 13.53, second egg for Nest 1
23rd April – third egg visible when Mrs YA stood up at 09.13
27th May – first hatch at 09.38
29th May – second chick seen, may have hatched previous evening
30th June – the chicks, both female, were ringed Blue VP and Blue VY. A GSM/GPS tracker was fitted to Blue VY
20th July – VY fledged before 08.58 when nestcam streaming began
20th July – VP fledged at 17.52
26th August – last time Mrs YA was seen
30th August – VY began her migration
3rd September – VP probably left Kielder
5th September – YA (probably) last seen

Nest 2

5th April – Mrs 37 back at noon. YA visits and courtship begins
9th April – 37 returns at 09.57, with fish!
19th April – 15.55, first egg for Nest 2
22nd April – 10.43, second egg for Nest 2
25th April – 10.06, third egg laid in the rain
29th April – 10.07, a FOURTH egg is seen. The first known clutch of four in Eng/Wales
10th May – an intruder lands and tramples the eggs several times; the following day they are left exposed for over 2 hours as an aerial battle is fought
22nd May – an intruder attacks Mrs 37 as she shelters the eggs and one is accidentally kicked out of the cup
29th May – first chick had hatched before nestcam streaming began
30th May – second chick had hatched before nestcam streaming began
5th June – third chick hatched at 10.51
7th June – third chick dies
6th July – the chicks, both female, were ringed Blue VS and Blue VM
22nd July – VS fledged at 14.52 and VM followed at 15.25
24th August – Mrs 37 last seen
30th August – VS last seen on the nest
1st September – 37 and VM still present in the afternoon, coverage ceased

Nest 3

The Nest 3 pair returned by early on 10th April
First egg laid around 18th April, three eggs seen on 30 April
First hatch by 08.00 on 30 May
Two chicks by 3 June
6th July – the chicks were ringed. A male wears Blue VN and a female Blue VW
24th July – VW fledged at 12.22
26th July – VN fledged, probably at 08.14
8th August – the female wasn’t seen on the nestcam or in field observations after this
29th August – VW last seen at 19.15
31st August – VN last seen in early morning. No sightings of the male


25th February – First reported UK sighting of an osprey in 2014 was at Kielder; probably a migrant heading for Scandinavia

mid June – Confirmation that a pair of unringed ospreys have bred successfully on a third nest in Kielder Forest. They have two chicks

1st July – Report of Nest 2 male osprey Blue 2H  from Nest 2, 2012, seen in County Durham

17th July – The chicks on Nest 3 were ringed Blue VK (male) and Blue VL (female)

11th August – Report of male osprey Blue 39 from Nest 1, 2011, seen at Derwent Reservoir, County Durham

Nest 1

26th March – An unringed female landed on the nest at 11.23
2nd April – White YA landed at 10.25 and a courtship of the 26th March female began
8th April – Mrs YA, the 2013 Nest 1 female, returned. After a tussle with the 26th March female Mrs YA paired with YA once more
24th April – First egg seen when camera streaming began
28th April – Second egg laid at 16.02
2nd May – Third egg seen at 09.30
4th June – Two eggs had hatched between 20.00 on 3rd June and 09.00 on 4th June
5th June – Third hatch at about 15.00
15th July – The chicks were ringed Blue UV (male), Blue VT (female) and Blue VV. Blue UV and Blue VV were fitted with GSM transmitters
28th July – All three chicks fledged successfully
30th August – Last sighting of Mrs YA on the nestcam
31st August – Blue VV started her migration soon after 08.00
1st September – Four ospreys in trees around the nest so Mrs YA presumably was still around
2nd September – Blue UV left on migration soon after 09.00. One osprey was seen in the trees and there was a later sighting of a flypast of the nest with a fish. Possibly both were YA
3rd September – YA (probably) was seen in the nest area with a fish. No further sighting

Nest 2

30th March – Yellow 37 landed (with a fish!) at 14.02

3rd April – Yellow 37 and White EB (born Tweed Valley in 2007) continue their relationship which began on Nest 1 on 1st April

5th April – Mrs 37 back on the nest, no sign of White EB around

24th April – The pair moved to a new platform in the same area

25th – 26th April – First egg laid, three eggs in total
4th June – First hatch at approx 12.35
5th June – Second hatch at approx 15.00
7th June – Third egg hatched between 20.00 on 6th June and 09.00 on 7th June
15th July – The chicks were ringed Blue 7H, Blue 8H and Blue 9H. All are female. Blue 7H was fitted with a GSM tracker
28th July – Blue 8H fledged
29th July – Blue 7H and Blue 9H fledged
mid August – Mrs 37 not seen after 17 August
3rd September – only 37 and Blue 7H were still present; Blue 8H and Blue 9H left on migration between 30th August and 3rd September
7th September – Blue 7H left on migration during the morning. 37’s date of departure not known because of nestcam problems


25th March – White YA confirmed at Blagdon Lake, Somerset
25th March – 5th April – White YA seen fishing at Blagdon and Chew Valley, initially with 2 or 3 other Ospreys
Summer – Blue 35 (Nest 1 2010) had a failed nest attempt in South Cumbria andBlue 38 (Nest 2 2011) was seen in North YorkshireNovember – Blue 1H (Nest 2 2012) seen in the Toddé swamps in Northern Senegal

Nest 1

YA looks down at the female having breakfast. (c) Forestry Commission

YA looks down at the female having breakfast. (c) Forestry Commission

4th April – A new female with a very dark head seen on the
4th April – Nest 2 male (Yellow 37) visited the nest
7th April – White YA returned to nest; slow bonding with the dark headed female already present
12th April – Mating observed for the first time although it could have been occurring off camera
19th April – White YA seen mating with last year’s female immediately on her return
22nd -28th April – the dark headed female reappeared to compete for YA. She was ever more present on the nest and proved to be the new partner
28th April – Nestcam link down
3rd May – Field observations suggest first egg laid
By 14th June – Feeding of chick(s) confirmed
By 27th June – one chick had died, probably the eldest
27/28th June – the elder remaining chick dies
29th July – the chick is ringed Blue 6H (sex uncertain)
16th August – Blue 6H fledged

Nest 2

Nest 2 pair 2013 (c) Forestry Commission

Nest 2 pair 2013
(c) Forestry Commission

3rd April – Osprey seen performing ‘nestoration’
4th April – Yellow 37 (male) confirmed at nest
9th April – Female confirmed at nest and mating witnessed
26th April – First egg laid
28th April – Second egg laid (video of the pair and their eggs)
1st May – Third egg laid (video of Mrs 37 and 3 eggs)
3rd June – First and second eggs hatched (video of chick 1)
5th June – Third egg hatched
10th July – The chicks are ringed Blue 3H (male), Blue 4H (female) and Blue 5H (female)
26th-29th July – All three chicks fledged during this period

26 March – first reported sighting of an Osprey at Bakethin.

Nest 1
03 April – original female returns but White YA becomes the breeding male.
19 April – first egg seen.
21 April – second egg seen.
23 April – third egg seen.
26 May  – first egg hatched.
28 May  – second egg hatched.
29 May  – third egg hatched.
09 June – 2 chicks disappeared from nest.
12 July – nest ringing – Blue HO – probably a female due to size.
20 July – chick becomes a fledgling.
01 Sept – nest 1 empty.

Nest 2
13 April – osprey pair confirmed on nest.
26 April – first egg seen.
28 April – second egg seen.
03 May  – third egg seen.
04 June – first egg hatched.
05 June – second egg hatched.
07 June – third egg hatched.
04 July – third chick to hatch died.
19 July – nest ringing – Blue 1H (probably female) and 2H (probably male)
30 July – chicks become fledglings.
15 Sept – nest empty.


Nest 1
End of March – A pair of ospreys return  lay three eggs.
5 July – one chick confirmed
19 July – 1 young ringed (blue 39 aka Bracken).
7 August – the single youngster takes its first flight.

Nest 2
July – confirmation of a pair of ospreys with young on a second nest.
19 July – 2 young ringed (blue 37 and 38)
15-17 August – two young from nest 2 fledge.

Mid September – ospreys have all departed for West Africa.

End of March – The pair return.
Beginning of May – 3 eggs are laid.
2nd week of June – all eggs hatch.
Early July – chicks ringed (Blue 34, 35 and 36 aka Aqua Splash and Spray)
Middle July – young fledge.
During the summer another bird is seen around and even attempted to land on the nesting platform.

A pair return and find one of the newly installed nesting platforms.  They make a nest, lay three eggs and rear three young (ringed as White KC, KM and KH).

A young pair of ospreys stay around Kielder, they attempt to build a nest but it falls out of the tree (a frequent occurrence on the first attempt).

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