Why Are Birds Eating All My Kale?

Wood pigeons are one of the most persistent and damaging bird pests for brassica crops, and kale is among their favourites. A flock of pigeons can strip a kale plant to bare stalks in a single morning, leaving nothing harvestable. Spinach is less commonly targeted but can also attract smaller birds. The damage is unmistakeable — large portions of leaf gone, with jagged or cleanly nibbled edges, and the birds often visible or audible nearby.

Identifying bird damage

Pigeon damage on kale is distinctive: large, torn sections of leaf missing, often from the top and outer portions of the plant, with the central stem and thick veins left behind as the birds work around them. You may find feathers, droppings, or footprints in soft soil as additional evidence. The damage often happens during the day, particularly in quiet periods in the early morning. In winter, when other food is scarce, pigeon attacks intensify and can completely destroy unprotected brassica crops.

Netting is the only reliable solution

Visual deterrents — CDs hung to flash, scarecrows, bird-scaring tape — work briefly if at all, and pigeons quickly habituate to them. The only control that reliably prevents bird damage is physical exclusion with netting. Stretch netting over the crop with enough height clearance that birds cannot push through and reach the leaves from above. The mesh size should be small enough that the birds cannot push their heads through — 25mm netting or less is ideal. Secure the edges at ground level to prevent birds pushing underneath. A simple timber or wire frame makes a permanent cage that covers the whole brassica bed and can be removed for harvesting.

Protecting individual plants

For small numbers of plants or in gardens where a full cage is not practical, individual wire cages made from bent chicken wire around each plant provide protection. This is labour-intensive for large numbers of plants but very effective. Alternatively, covering kale with fine insect mesh (enviromesh) provides dual protection against both birds and insects — the fine mesh keeps pigeons, caterpillar-laying butterflies, cabbage whitefly and aphids all away simultaneously, and pays for itself many times over in a single season.

Winter kale is most at risk

Bird pressure on kale increases significantly in autumn and winter when natural food becomes scarce and pigeons turn more aggressively to garden crops. If you plan to harvest kale through winter — one of its great virtues — netting from October onward is essential in most UK gardens. Spring brassicas and young transplants are also vulnerable until they establish enough size to be less attractive and the birds have more food options.