Osprey Details
Blue CJ7
| Darvic Leg | R | 
| BTO Ring | |
| Ringing Date (if known) | |
| Gender | F | 
| Hatch Date (or Year) | 2015 | 
| Male Parent | Blue 06(09) (Blue 06) | 
| Female Parent | Blue 00(09) (Blue 00) | 
| Natal Nest | Rutland Site K | 
| Translocated? | |
| Breeding Bird (with public breeding records)? | True | 
| Deceased? | |
| Comments Returned 2017. Breeding female at Poole Harbour 2022-  | |
References and Sightings
| Article - Print | 17-Jul-2025 | Blue CJ7 | Leicestershire and Rutland Wildlife Trust. Rutland Water Wildlife Report 2023 (Osprey report including off-site nests and returns, pp.10-17. Note: we have been alerted to some possible typos/errors in the BTO ring data in the report. We are currently in the process of verifying the data, and will update any errors in due course.) | 
| URL | 25-Apr-2022 | Blue CJ7 | Roy Dennis Wildlife Foundation - Blog 25-Apr-2022: The Start of New Osprey Dynasties (Poole nest success) | 
| Book | Blue CJ7 | The Osprey (Poyser monograph) (Dr Tim Mackrill) p.55, p.98 | 
Breeding Seasons
Publicly Known Offspring
| Blue 5H1 | Blue 5H1 | R | F | 2022 | Blue 022 | Blue CJ7 | Poole Harbour | |
| Blue 5H2 | Blue 5H2 | R | F | 2022 | Blue 022 | Blue CJ7 | Poole Harbour | |
| Blue 5H3 | Blue 5H3 | R | M | 2023 | Blue 022 | Blue CJ7 | Poole Harbour | |
| Blue 5H4 | Blue 5H4 | R | M | 2023 | Blue 022 | Blue CJ7 | Poole Harbour | |
| Blue 5H5 | Blue 5H5 | R | F | 2023 | Blue 022 | Blue CJ7 | Poole Harbour | |
| Blue 5H6 | Blue 5H6 | R | M | 2024 | Blue 022 | Blue CJ7 | Poole Harbour | |
| Blue 5R0 | Blue 5R0 | R | M | 2024 | Blue 022 | Blue CJ7 | Poole Harbour | |
| Blue 5R1 | Blue 5R1 | R | M | 2024 | Blue 022 | Blue CJ7 | Poole Harbour | |
| Blue 5R2 | Blue 5R2 | R | M | 2024 | Blue 022 | Blue CJ7 | Poole Harbour | |
| Blue 5R3 | Blue 5R3 | R | F | 2025 | Blue 022 | Blue CJ7 | Poole Harbour | 
                                                