| Brood | Start of nesting |
Nest completed |
First egg laid |
No of eggs |
Incubation started | Start of hatching | Wing Flapping | Fledging | No fledged |
| 2001 Box1 | 26th Feb | 25th April | 9 | 4th May | 16th May | 30th May | 4th June | 6 | |
| 2002 Box1 | 9th March | 18th April | 8 | 1st May | 13th May | 28th May | 1st June | 7 | |
| 2002 Box2 | 19th Feb | 7th April | 8+3 | 7th May (note 1) |
19th May | 7th June | 5 | ||
| 2003 Box1 | 11th March | 20th April | 24th April | 8 | 5th May | 16th May | 5th June | 6 | |
| 2003 Box2 | 29th March | 19th April | 25th April | 5 | 30th Apr | 13th May | 27th May | 31st May | 2 (note2) |
| 2004 Box1 | 1st March | 21st April | (note 3) | - | |||||
| 2004 Box2 | 20th March | 5th April | 16th April | 7 | 23rd Apr | 6th May | 19th May | 24th May | 7 |
| 2005 Box1 (GT) | 10th April (note 4) |
13th April | 22nd April | 5 | 27th April | 9th May | 29th May | 5 | |
| 2005 Box2 | 11th March | 5th April | 13th April | 8 | 21st April | 4th May | 19th May | 25th May | 6 |
| 2006 Box1 (GT) | 6th April (note 4) |
18th April | 20th April | 5 | 24th April | 6th May | 25th May | 2 | |
| 2006 Box2 | 8th March | 20th April | 21st April | 10 | 29th April | 11th May | 29th May | 1st June | 8 |
| 2007 Box1 (GT) | 1st March (note 4) |
15th March | 11th April | 6 | 16th April | 28th April | |||
| 2007 Box2 | 23rd Feb | 7th April | 13th April | 10 | 21st April | 2nd May | (note 5) | ||
| 2007 BBB | 24th March | 12th April | 14th April | 9 | 21st April | 4th May | (note 5) |
Note 1. After the first 8 eggs had been laid, a fight over possession of the nest took place. Fresh nesting material was brought in and nearly 3 weeks later the new hen started laying. By the time that a further 3 eggs had been laid the original clutch had resurfaced and she probably thought she had laid all 11! Six eggs eventually hatched and five chicks fledged.
Note 2. Three chicks were taken from the nestbox by a great spotted woodpecker shortly before they fledged.
Note 3. The female disappeared shortly after she had completed the nest. The male continued to call her and bring food to the nest for her for over two weeks.
Note 4. A great tit pair occupied Box1 these years. Incubation and fledging times differ little from those of bluetits.
Note 5. Three days after hatching, all the chicks in this box were dead. How they died is not known at this time.