10/06 Nest Box Report for 2026

 Nest Box Monitoring: 2026

Summary: Four Nest Monitors visited 161 nest boxes on 34 dates between  25th Mar and 8th June 2026. Nest Box occupation has improved over the last six years for Blue Tit and Nuthatch less so for Great Tit. Successful Outcome in Brackets (Bagnor Estate pre-2026 nest records not included in the following table)

                       Species        2021           2022           2023           2024           2025           2026

                       Blue Tit       45(23)         56(39)        56(49)         79(66)        85(72)         77(72)

                      Great Tit       29(21)         33(28)        36(28)         52(49)        34(32)         47(44)

                     Nuthatch         7(5)             4(2)            5(3)           12(11)          6(6)           11(10)

     Spotted Flycatcher           -                  -                  -                  -               1(1)                -

           Pied Flycatcher           -               1(0)               -                  -                  -                  - 

  Failed Pre Egg Stage           9                12               20                8                19               10

                Unoccupied          29                16               16                6                15               16

2026 Summary  161 boxes monitored – 97 Greenham Common, 64 Snelsmore Common.

Species                    Occupied                Succesful                    Failed

Blue Tit                          77                         72                                 5

Great Tit                         47                         44                                3             

Nuthatch                        11                         10                                 1 

Unknow Sp.                   10                           -                                  -

Unoccupied                   16                           -                                  - 

Bagnor Estate 39 Boxes

The Bagnor Feeder CES operation ceased winter 2025/26 so JL did not monitor the Nest Boxes in 2026.

Greenham Common Bowdown NR Ian Quelch Monitored 22 Boxes

Blue Tit          12-Successful     1-Young Deserted       

Great Tit          3-Successful

Nuthatch          1-Succesful       1-Eggs Deserted

Unknown Species                     1-Eggs Deserted

Unoccupied     2

Greenham Common Peaked Hill Jan Legg Monitored 32 Boxes

Blue Tit          14-Successful                                          

Great Tit          7-Successful     1-Young Deserted

Nuthatch          3-Successful      

Unknown Sp   2-Ceased Before Laying.

Unoccupied     4 plus 1 box fell off tree after the last maintenance visit and before the 1st check visit

Greenham Common Peckmore Copse Ian Quelch Monitored 20 Boxes

Blue Tit            6-Successful     1-Young Deserted      

Great Tit          8-Successful      

Nuthatch          2-Successful

Unoccupied     2 plus 1-Occupied By Non-Avian Species

Greenham Common Sandleford Copse Jone Ayres & Derek Bingham monitored 23 boxes

Blue Tit          11-Successful     1-Ceased Before Laying

Great Tit          8-Successful

Nuthatch          1-Successful

Unoccupied     2

Snelsmore Common JanLegg monitored 63 boxes

Blue Tit          28- Successful    1-Young Deserted      1-Eggs or Predated

Great Tit        25-Successful     1-Young Deserted

Nuthatch          3-Successful

Unknown Sp   3-Ceased Before Laying

Unoccupied     8                         

Pulli Ringed JL Decided Not To Ring Nest Boxes pulli  in 2026.

A brood of 6 Nuthatch Ringed at Snelsmore Common – to keep my hand in.