Why a bird bath earns its place

Birds need water all year round, not just during a heatwave. They drink it, they bathe in it to keep their feathers in good working order, and in a hard frost they need a dependable source when every puddle in the neighbourhood is frozen solid. A bird bath brings the wildlife right up to the kitchen window, which is a small daily pleasure that never really wears off. The good news is that a perfectly good one can be made from things you may already have lying about the garden — a shallow dish, a handful of stones and something solid to stand it on.

Choose the spot before you choose the materials

Position matters more than the bath itself. Get this right and the birds will find it within a day or two; get it wrong and you will be staring at an empty dish all summer.

• Give it a clear approach. Birds are vulnerable while bathing because wet feathers make for slow take-off. Keep the bath at least two metres away from dense shrubs, fences and shed walls where a cat could lie in wait.
• Stay near cover, but not in it. A hedge or small tree a few metres away gives them somewhere to retreat to if they are disturbed. Too close, though, and it becomes an ambush point.
• Aim for partial shade. Some sun keeps the water fresh and discourages algae, but a bath in full sun all day will need topping up constantly and will turn green within a fortnight.
• Think about access. If you cannot reach it with a watering can without trampling a border, you will not keep it filled. A spot near a path or the edge of the lawn is ideal.

What you actually need

This is a build you can put together in twenty minutes, so resist the urge to over-engineer it. Gather the following:

• A shallow dish roughly 30–40cm across and no more than 5cm deep. A glazed plant saucer, an old ceramic bowl, a stone trough or even a sturdy dustbin lid will do. Check that it has no drainage hole — if it does, seal it with a blob of silicone or line it with a piece of pond liner.
• A stable base. An upturned terracotta pot, a stout tree stump, a stack of bricks bedded into the soil, two concrete blocks or a stone plinth all work well. Aim for a finished height of 40–70cm: high enough to be out of reach of the local cats, low enough to be easy to fill.
• A few stones. Flat pebbles for the bottom of the dish and two or three larger ones to build a ramp.
• A spirit level, if you have one. A bath that tilts will always be empty at one edge and overflowing at the other.

Assembling it so it stays put

Clear the ground where the base will sit and firm it with your heel or the back of a spade. Set the base down and press it in, then rock it gently with your hand — if there is any movement at all, dig it in a little deeper or bed it on a thin layer of sand or grit. A bird bath that wobbles will crack, and a cracked dish is a wasted afternoon.

Once the base is solid, sit the dish on top and check the level in two directions. If it rocks, shimmy it round or slip a thin piece of slate under one edge. When you are happy, trickle a little soil or fine gravel around the foot of the base so it looks settled rather than plonked down.

Stones, ramps and getting the depth right

Fill the dish and take a look at the depth. You want no more than 5cm at the deepest point, and ideally 2–3cm. Songbirds need to be able to stand up in it; if it is too deep they will drink but will not bathe.

Now scatter a handful of flat pebbles across the bottom. These serve three purposes: they give birds a grippy surface, they create shallows that bees and other pollinators can drink from safely, and they let you keep the water level lower without the dish looking half-empty.

Finally, build a gentle ramp of stones from the water up over the rim. Hedgehogs, frogs and the occasional bumblebee all fall in from time to time, and without an exit route they will drown. A couple of larger, well-seated stones are all it takes.

Keeping it clean and topped up

The routine is simple, and doing it properly is what keeps birds healthy. Top the bath up every day or two in summer, and check it after windy weather. Water that has stood for more than a few days grows a film of algae and bird droppings, so give the dish a scrub once a week in warm weather and every fortnight in winter.

Use a stiff brush and hot water, and nothing else — detergents and disinfectants leave residues that can harm feathers and skin. A capful of white vinegar in a bowl of hot water is fine for stubborn algae, provided you rinse the dish thoroughly afterwards. Empty the old water onto a border rather than down the drain.

In freezing weather, never pour boiling water into a frozen bath; the thermal shock will crack ceramic and stone. Instead, lift out the ice with a warm-water rinse, or float a small ball on the surface. It moves in the breeze and keeps a patch of open water available for drinking. Keep topping up through winter too, because a reliable unfrozen bath is genuinely valuable to garden birds when the temperature drops.