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Osprey Details

Blue 643

Darvic Leg	L
BTO Ring
Ringing Date (if known)
Gender	F
Hatch Date (or Year)	2022
Male Parent
Female Parent
Natal Nest	Carron Valley, Stirlingshire
Translocated?
Breeding Bird (with public breeding records)?	True
Deceased?
Comments Seen in Cabeçao, Mora, Portugal in January 2023. Paired with Blue UV at Kielder 5A in 2025.

References and Sightings

Type	Date	Osprey	Reference Details
URL	26-Apr-2026	Blue 643	Kielder Ospreys - Blog - 26-Apr-2026: Egg 1 for Nest 5A
URL	04-Apr-2026	Blue 643	Kielder Ospreys - Blog - 4-Apr-2026: Blue 643 returns to Nest 5A
URL	12-May-2025	Blue 643	Kielder Ospreys - Blog - 12-May-2025: An Egg at Nest 5A
URL	09-May-2025	Blue 643	Kielder Ospreys - Blog - 9-May-2025: Another New to Here Intruder (Blue 725) and nest 5A Update (including information about Blue 643)
URL	29-Apr-2025	Blue 643	Kielder Ospreys - Blog - 29-Apr-2025: A New Intruder (Blue 3H3, plus Blue 643, Blue 386, Y1 and UV)
URL	28-Apr-2025	Blue 643	Kielder Ospreys - Blog - 28-Apr-2025: Mainly intruder news (Blue 565, Blue 728, 442/Featherstone, Blue 280, Blue 306, Blue 643)
URL	15-Apr-2025	Blue 643	Kielder Ospreys - Blog - 15-Apr-2025: Early season Roundup (Nest 1A, Nest 6, Blue Y1, Blue UV, Blue 643)
URL	18-Jan-2023	Blue 643	Águia-pesqueira - Sighting in Portugal - 18-Jan-2023: Blue 643 seen in Cabeçao, Mora, Portugal

Breeding Seasons

	Year	Nest	Male Parent	Return Date	Female Parent	Return Date
	2026	Kielder 5A	Blue UV	06-Apr-2026	Blue 643	04-Apr-2026
	2025	Kielder 5A	Blue UV	07-Apr-2025	Blue 643	15-Apr-2025

Note: Bird may have had other breeding seasons not publicly reported on.

Publicly Known Offspring

	Ring	Id	Leg	Gender	Hatched	Male Parent	Female Parent	Nest
		Chick 1 Kielder 5A 2026		?	2026	Blue UV	Blue 643	Kielder 5A

Note: Bird may have had other offspring not publicly acknowledged or reported on.

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