The Challenge

Important information – This activity MUST be carried out with a responsible adult.

What do you need?

  • Plank of FSC wood 15cm x 1.4m long x 1.5-1.8cm thick and not pressure treated

  • Pencil and tape measure

  • Saw

  • Galvanised nails and screws
  • Strip of waterproof rubber
  • Drill and Hole saw/cutter

  • Water-based preservative (for softwood)

  • Galvanised wire (if attaching to a tree)

  • Rawl plugs (if attaching to a wall)

  • Ladder

Steps

1. Measure and cut your wood according to the diagram

2. Put small drainage holes in the base to help stop the box getting damp inside.

3. Nail all the panels, except the roof, together. The sides, back and front ‘wrap around’ the base.

4. Attach the roof with screws, so that you can get back into the box to clean it in the autumn.

5. Use the waterproof strip to make a hinge between the top edge of the roof and the back board. You could use a bicycle tyre inner tube, damp-proof membrane or roofing felt.

6. If you are using softwood, you could paint it with water-based wood preservative. If you do this, it is important to paint only the outside of the box and not paint around the entrance hole. Make sure to dry and air the box thoroughly before putting it up.

Where to put your Nestbox?

  • On trees, walls or fences.
  • Unless shaded by buildings and trees in the day, Nestboxes should face between north and east to avoid strong sunlight and wet winds.
  • Check there is a clear flight path to the entrance.
  • Great Tits and Blue Tits like it to be two to four metres up a tree or wall.
  • Robins and Wrens like it to be less than two metres off the ground and hidden in vegetation.
  • Sparrows and Starlings like to be high up under eaves – two or three can be spaced out on the side of a building.

Please note
The dimensions shown are for 1.5cm thick wood. If your wood is different, the dimensions of the base should be 15cm by 15cm minus 2 x the thickness of the wood (e.g., if the wood is 1.8cm thick, the base should be 15cm x 11.4cm).

The inside of the box must be at least 10cm square and the bottom of the entrance hole must be at least 12.5cm from the floor. If it is less, chicks might be scooped out by a cat.

The inside front surface should be rough to help the chicks to climb up.

This entrance hole size shown is for House Sparrows. Use the following hole sizes for attracting different species:

2.5cm for Blue Tits and Coal Tits
2.8cm for Great Tits and Tree Sparrows
45cm for Starlings – box needs to be 25-30% larger

Remove the top half of the front panel for Robins, Wrens, and Pied Wagtails.

“Spending time outside, building your own nestbox, and watching birds make themselves at home are all great for our mental health too.”

Manx BirdLife

Support team

To find out how we can help, please email