Cover stacked close: what game birds ask of a planting

For a buyer of hedging and field-edge plants, the lesson of game birds is that cover is a system of layers, not a single planting. A quail, a partridge or a pheasant needs nesting cover, escape cover and brood cover within easy daily reach of one another. Plant only one of the three and the birds stay absent; stack all three and the field begins to fill.

What kind of cover does a covey actually need?

Nesting cover is grass: clumping species left standing through spring, dense enough to hide a nest, open enough at ground level for a bird to run between stems. Escape cover is the thicket, dense woody growth, bramble or close-planted shrub, placed so a fleeing bird reaches it in seconds. Brood cover is different again: open ground under light vegetation where chicks forage on insects, the one layer a tidy garden never provides on its own.

The discipline of stacking these strata is described from the field side by The Brush and the Bay, an almanac of the south Texas brush country and Bristol Bay, whose page on quail habitat explains why nearly every empty prairie of that region fails on exactly this requirement: the cover a covey holds is three covers, close together, held all year. The same arithmetic governs the northern bobwhite on any hedged farm, which is why its decline tracks the tidying of field edges.

Why does a single habitat leave a field empty?

Because each layer fails alone. A grass field with no thicket is a field the hawks own, and the birds nest there once and vanish. A thicket with no open ground raises no chicks, because brood cover is where the young birds feed. Open ground with no escape cover nearby holds birds in calm weather and loses them to the first predator with patience. Field guides record the same finding in numbers: the fields that hold coveys year after year are the ones where the three habitats touch, not the ones with the largest single block.

Which plantings hold birds through the season?

Translate the three layers into a mail order list and the planting writes itself. For escape cover, order dense, thorned or thick-branched shrubs in quantity, planted in a double staggered row on the field edge: hawthorns, wild roses, native plums or bramble fruits, cheap as bare root whips and fast to close. For nesting cover, a strip of native bunch grasses along the inside of the hedge, left uncut from April to August. For brood cover, a disturbed strip a few metres wide, ploughed or sown with a weedy annual mix, kept bare-footed by the birds themselves.

Ordering notes that save a season: buy the shrubs as bare root whips by the bundle, since cover plantings fail by being too thin, not too sparse of variety. Order grasses as plugs or seed, never as ornamental clumps. And plant the woody line in fall so the thicket is a year old before the first nesting season that counts. A hedge planted for birds and a hedge planted for wind are the same hedge; the difference is what is allowed to grow at its feet.

Maintenance is where most cover plantings quietly die. The escape thicket thickens for three years and then shades out its own lower growth; the grass strip is mown at the wrong time once and the nesting year is lost; the brood strip succeeds so well it becomes a hedge itself and stops being open ground. The fix is a written rotation: a third of the woody edge cut back each winter, the grass strip cut after nesting, never before, and the open strip re-disturbed each year. None of it is skilled work. All of it is calendar work, and the birds are the calendar’s strictest readers.

Cost the hedge by the metre, not the plant. A double staggered row of bare root whips at thirty to forty centimetres spacing runs roughly a dollar per metre of thicket, which is why cover is planted by the hundred and why the mail order bundle exists. The grass strip costs seed and patience, and the open strip costs only restraint.

And plant it where you will see it. A cover planting checked daily, from a window, is a cover planting that gets its maintenance on time; the field edge nobody walks is where the gaps appear.

Start with the woody edge, since it is the slowest layer, and let the grass and open strips follow its spacing.