If a tree or hedge has become overgrown, you may be wondering whether it can be pruned during the spring or summer. This is particularly important during bird nesting season, when trees, hedges and dense shrubs provide valuable shelter for breeding birds.
Tree work is not automatically prohibited throughout the nesting season. However, it must be carefully planned to ensure that active nests, eggs and young birds are not harmed or disturbed.
Here is what homeowners and landowners need to know before arranging tree surgery during bird nesting season.
When Is Bird Nesting Season in the UK?
The main bird nesting and breeding season is generally considered to run from 1 March until 31 August. However, these dates should be treated as a guide rather than a guarantee.
Weather conditions, location and the species involved can all affect when birds begin and finish nesting. Some birds may start building nests before March, while others may still have dependent young after August.
This means that active nests must be considered at any time of year, not just during the recognised spring and summer nesting period.
Is It Illegal to Cut Trees During Nesting Season?
There is no blanket ban preventing all domestic tree and hedge work between March and August. The important legal question is whether the work could affect an active bird’s nest.
Under the Wildlife and Countryside Act 1981, it is an offence to intentionally:
- Kill, injure or take a wild bird
- Take, damage or destroy a nest while it is being built or used
- Take or destroy a wild bird’s egg
Certain species receive additional protection against disturbance while nesting. Further information is available in the Government’s guidance on wild bird protection.
The law applies whether the nest is in a large tree, garden hedge, climbing plant, shrub or area of dense vegetation.
Can Tree Surgery Still Be Carried Out?
Tree surgery can sometimes proceed during nesting season, provided the area has been properly checked and there are no active nests that could be affected.
Before work begins, a competent tree surgeon should inspect the tree and surrounding vegetation for signs of nesting activity. These signs may include:
- Birds repeatedly entering and leaving the same part of a tree or hedge
- Adult birds carrying twigs, grass, insects or food
- Alarm calls when someone approaches
- Visible nests, eggs or young birds
- Fresh nesting material within dense foliage
- Bird droppings concentrated beneath a particular branch or cavity
Finding a nest is not always straightforward. Small nests can be extremely well concealed, particularly in thick conifers, ivy-covered trees and established hedges.
If the vegetation is too dense to inspect properly, postponing non-urgent work may be the most responsible option.
What Happens If an Active Nest Is Found?
If an active nest is found, work that could damage the nest or disturb the birds should stop. A suitable undisturbed area must be left around it until the young birds have fledged and the nest is no longer being used.
There is no fixed waiting period because different species raise their young at different rates. The nest should be monitored from a sensible distance without repeatedly approaching or disturbing it.
Once the nest is no longer active, the tree surgeon can reassess the site and decide whether the planned work can safely continue.
An old, unused nest does not normally receive the same protection as a nest that is being built or occupied. However, it is important to be certain that the nest is genuinely inactive before carrying out any work.
What About Dangerous or Damaged Trees?
A dangerous tree should not be ignored simply because it is nesting season. A split limb, storm-damaged tree or unstable trunk could present an immediate risk to people, buildings, roads or vehicles.
A professional tree surgeon can inspect the tree and determine:
- Whether there is an immediate safety risk
- Whether the affected area contains an active nest
- Whether limited work can make the tree temporarily safe
- Whether specialist ecological advice is required
- Whether the work can be postponed without increasing the danger
Where urgent action is necessary, the aim should be to complete only the work needed to control the immediate risk while causing the least possible disturbance. Depending on the circumstances and species involved, further advice or permission may be needed.
Do the Same Rules Apply to Garden Hedges?
The protection given to wild birds and their active nests applies to garden hedges as well as trees.
Separate seasonal cutting restrictions apply to certain hedgerows on or next to agricultural land. Government guidance states that qualifying agricultural hedgerows must generally not be cut between 1 March and 31 August, although there are exemptions.
Private garden boundaries are normally exempt from these specific agricultural hedgerow-cutting rules. However, the legal protection for nesting birds still applies. You must not damage or destroy an active nest simply because the hedge is within a domestic garden.
More information about countryside hedgerows is available through the Government’s hedgerow protection guidance.
Is Winter Always the Best Time for Tree Work?
Autumn and winter can be convenient times for many types of tree work because most birds are no longer nesting and the structure of deciduous trees is easier to inspect.
However, winter is not automatically the best pruning season for every tree. The correct timing depends on the species, age, condition and reason for pruning.
For example, cherry, plum and other stone fruit trees are often pruned during the warmer months to reduce the risk of diseases such as silver leaf. Some trees may also require summer pruning to control growth or maintain their shape.
This is why tree work should be planned around both wildlife protection and the biological needs of the tree.
Check for Other Tree Restrictions
Nesting birds are not the only consideration before tree work begins. You should also establish whether:
- The tree is protected by a Tree Preservation Order
- The property is within a conservation area
- A felling licence may be required
- Bats or other protected species could be present
- The tree is shared with or overhangs a neighbouring property
Starting work without the correct checks could result in legal problems, unnecessary damage and considerable expense.
Professional Tree Surgery in Brentwood and Essex
Properly planned tree surgery protects wildlife while keeping trees healthy, safe and manageable.
Prince Tree Surgery provides professional tree inspections, pruning, crown reductions, tree felling, hedge maintenance and emergency tree surgery throughout Brentwood, South Essex and the surrounding areas.
Our experienced team can assess the condition of your trees, check for potential wildlife and planning restrictions, and recommend the safest and most appropriate time to carry out the work.
For advice or a free, no-obligation quotation, contact Prince Tree Surgery on 01277 229709.