When Is Bird Nesting Season in the UK?

Written By Wez - 04/08/2026

What the law actually says

The Wildlife and Countryside Act 1981 makes it illegal to intentionally kill, injure, or take any wild bird, or to take, damage, or destroy an active nest or its eggs. Penalties can include unlimited fines and even imprisonment, applied per bird, nest, or egg. Some rarer species listed on Schedule 1 of the Act get further protection against disturbance while nesting.

For practical purposes in your garden, that means cutting a hedge with an active blackbird nest in it is an offence, whether it’s May or November (late and early nesting does happen). The dates are guidance about risk, not a legal on/off switch.

So can I cut my hedge between March and August?

Legally, yes, if you can be confident no active nest is present, and that’s the catch. Hedges are dense by design, nests are hidden by design, and proving a negative from the pavement is hard. The responsible approach, and the one we use at Silver Tree Services, is:

Schedule major works outside the season. Hard reductions, renovations, and heavy cutting wait for September to February wherever the job allows.
Check before in-season work. A careful inspection immediately before light trimming, watching for adult birds repeatedly visiting one spot, listening for chicks, looking for droppings and nest structures.
Stop if a nest is found. The affected section waits until the young have fledged, usually a matter of weeks, and the rest of the job continues.

Farmers face stricter rules: cross-compliance rules generally prohibit cutting countryside hedgerows between 1 March and 31 August, with limited exceptions. Garden hedges aren’t covered by that ban, only by the nest protection above.

What about tree work?

The same logic applies. Trees host nests from the obvious (woodpigeons, magpies) to the easily missed (treecreepers behind bark, owls in cavities), and tree surgeons should check before climbing or cutting in season. At Silver Tree Services, pre-work nest checks are part of every job between March and August across Gloucestershire, and we’ll happily reschedule a section of work for a few weeks rather than break the law and trash a brood. Bats add a second layer on mature trees: all UK bat species and their roosts are legally protected year round, and cavity-bearing trees get checked for roost potential too.

When is the best time for hedge and tree work?

For heavy hedge cutting and reductions: September to February, when nesting risk is minimal, the structure is visible (for deciduous species), and the hedge has the whole following season to respond. For tree work, most operations are fine year round outside nesting constraints, with species-specific exceptions: cherries and plums prefer summer pruning to avoid silver leaf disease, while maples and birches bleed sap heavily in late winter and early spring.

If your hedge has quietly got out of hand and you’re reading this in April, don’t panic and don’t reach for the flail. A light, checked trim now and a proper reduction booked for autumn is the legal, sensible route, and it’s exactly what we’d quote you.

The short version

Silver Tree Services schedules hedge and tree work across Gloucestershire around exactly these rules, with nest checks built into every in-season job. If you’ve got a hedge or tree that needs work and you’re not sure about timing, call 01242 472560 or get a free quote, and we’ll tell you what can happen now and what should wait.

Related: Hedge trimming · Tree surgery · Do I need permission to cut down a tree?

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