Tag: Nest Box

We have previously looked at the where to hang and how to maintain a nest box. Now we’d like to get down to the details, and take a look at the actual process of putting the box up.

For most situations, you will want to put the box on a tree, fence or wall, so we will address each of these individually. (If you have a box that is designed to be built into a house wall or roof, then it is likely that your builder will care of this for you).

The tips below are suitable for both bird and bat boxes.

Fixing to a tree

There are several things to be aware of when attaching a nest box to a living tree. The most important is that the growth of the tree will affect the fitting. This means that boxes should be checked at least once a year to make sure that they are still secure. A box which has fallen to the ground is of little use to birds, and one which falls down with a nest and eggs inside is disastrous.

The most common way to put up a nest box is using a strong nail which is at least 85mm in length. It is important to use aluminium nails, as these will not damage a chainsaw (or chainsaw user), should they be left in the tree when it is felled. Nylon, brass, copper and hardwood nails can also be used but steel nails should be avoided as they will quickly rust, making them difficult to adjust or remove.

Using a screw instead of a nail can also be a good option and means that you can loosen it by a couple of turns every year to compensate for the growth of the tree. Screws are more suitable for hardwood trees as they will be very difficult to adjust in softwood. Make sure that all nails or screws are removed from the tree if the boxes are taken down.

An alternative to using a nail or screw is to tie the box to the tree. Wire and synthetic twine both work well and, if boxes are tied loosely, they can be edged upwards as the tree grows. Boxes can also be hung from a horizontal branch if they come with a suitable hanger (e.g. Schwegler 1B).

Fixing to a fence

Hanging a bird box on a fence poses fewer problems than siting a box on a tree, as you will not need to worry about the wood growing. Use a strong nail or screw and check it annually to make sure that it still feels secure.

Fixing to a wall

To fix a box to a brick wall will require a power drill with hammer action, masonry bits and a screwdriver. You will also need wall plugs and screws which are small enough to go through the hole in the box. Using the drill, make a hole which is slightly longer than your wall plug. (You can use a piece of tape around the drill bit to indicate the depth to which you need to drill). Insert the plug and then screw in the screw, first threading it through the hole in the box. Having a second person to hold the box will probably be helpful and, if you are using ladders, make sure that you take sensible steps to ensure your safety. Appropriate eye protection and clothing should always be worn.

Head over to nhbs.com for our full range of nest boxes, aluminium nails and ladders.

There is a shortage of natural nesting sites for birds and this has played a part in the decline of some of the UK’s most iconic species. It’s easy to provide nesting opportunities for birds in our gardens and outdoor spaces, and with spring rapidly approaching, now is the ideal time to start thinking about nest boxes for your local birds ahead of the breeding season.

In this blog, we answer some of the most frequently asked questions about nest boxes – covering where and when to put them up, cleaning and maintenance, how to deal with predators and more.

When is the best time to put up nest boxes?

There really is no ‘best’ time to put up nest boxes.  By putting up boxes in the autumn you can provide much needed winter refuges for roosting birds and possibly increase the chance of them staying and nesting there when spring comes around.  However, any box erected before the end of February stands a good chance of being occupied if it is sited correctly.  Even after February there is still a chance that they will be used; tits have been known to move in during April and house martins as late as July. Therefore, put your nest box up as soon as it is available rather than leaving it in the shed!

Where should I hang my nest box?

Locating your nest boxes correctly is one of the key determinants in how likely birds are to occupy them, therefore the ‘where’ is much more important than the ‘when’. Nest boxes must provide a safe, comfortable environment and protect the inhabitants from predators and the worst of the weather.  This may be difficult to achieve; a safe location out of reach of predators may also be exposed to the weather, so have a good think before you start putting nails in.

Nest boxes can be fixed to walls, trees or buildings, and there are an array of different styles of boxes that suitable for each location. Fixing to artificial surfaces means the growth of the tree does not have to be taken into consideration, which is useful for Schwegler and Vivara Pro nest boxes that can last for at least 20-25 years: a significant amount of time in the life of a small tree. If you’re planning any building work, remember that some bird and bat boxes can also be built directly into walls and roofs.

Locating boxes out of the reach of predators can be a challenge (weasels can climb almost anything), but there are things you can do to make it harder for them.  Boxes in gardens should be located where cats cannot get to them, and prickly or thorny bushes can also help to deter unwanted visitors. Some nest boxes also have anti-predator designs (e.g. Schwegler’s 1N deep nest box). It is also best to avoid nest boxes that have a combined bird feeder and boxes should not be sited too close to the bird feeders in your garden. Visitors to the feeder may disturb the nesting birds and the feeder could attract unwanted attention from predators.

The height of the box is not crucial for many species, however, by placing it at least two metres off the ground you can help prevent predators and human interference.  The direction of the entrance hole should be away from the prevailing wind and it is beneficial for there to be a clear flight path to the box. Crucially, the box should be also be sheltered from the prevailing wind, rain and strong sunlight, so in most UK gardens aim for a northerly, easterly or south-easterly aspect. If possible, position the box at a slight downward angle to provide further protection from the rain. There are a few species do have specific requirements for where a box should be sited (e.g. house martins and swifts nests need to be sited under the eaves); please see our product details for particular instructions for different species.

Wherever you position the box, try to ensure that you can still get access to it for maintenance.  And finally, if possible, try to put it somewhere where you can see it, or invest in a nest box camera, so as to maximise your enjoyment of watching wild birds in your garden.

Is there anything else I can do to deter predators?

As already mentioned, location is the most important factor when trying to deter predators. Whilst some mammals can climb walls, a blank wall is fairly inaccessible so can be a good choice. Ensure that the box cannot be reached by a single jump from a nearby branch or the ground.

Box design can also help deter predators. An entrance hole reinforced with a metal plate will prevent grey squirrels and some avian predators from enlarging the hole and gaining access to the nest. Woodcrete and WoodStone boxes are too hard for any predator to break through. However, you can also reinforce a nest box yourself with metal protection plates or provide additional protection with prickly twigs. Deep boxes may prevent predators reaching in and grabbing nest occupants, although some tits have been known to fill up deep boxes with copious quantities of nesting material. If you’re using an open-fronted nest boxes, a balloon of chicken wire over the entrance can work well. If you live in an urban area, cats are likely to be the most common predator. Gardeners have long since used various methods to exclude these unwanted visitors, such as pellets and electronic deterrents, all with varying degrees of success.

How do I manage the nest box?

A well-designed nest box will only need one annual clean in the autumn. It is important not to clean out nest boxes before August as they may still be occupied. Wait until autumn and then remove the contents, scattering them on the ground some way from the box to help prevent parasites re-infesting the nest box. Wear gloves and use a small brush or scraper to remove debris from the corners. Boiling water can be used to kill any parasites remaining in the box, but remember to leave the lid off to dry out fully. Do not wait until the winter to clean out nest boxes as birds may already be roosting in them. The tit species do a thorough clean out of any old nesting material or roosting debris before they begin nesting again, but it will save them energy if you can help out.

How many nest boxes do I need?

The exact amount of boxes required will depend on the space available, species and the surrounding habitat. As a very general rule of thumb, start with ten assorted small boxes per hectare (ensure uniform spacing between boxes). Keep adding several more boxes each season until some remain unused and hopefully you’ll hit on the correct density of boxes. However, even if you only have space for one box it is still worthwhile, providing it is suitably located, as many UK bird species need all the additional nesting habitat they can get.

You can browse the full range of nest boxes we sell online and, if you’re keen to find out more, check out the BTO Nestbox Guide, which is packed with essential information.

If you are interested in installing a nest box camera into one of your bird boxes, take a look at our “How to choose the right nest box camera” article for more information on choosing the model that’s right for you.

Further information about individual nest boxes, including advice on positioning, can be found alongside each nest box in our range.  If you have any other questions or would like any further advice, then please get in touch with our team of Wildlife Equipment Specialists.