Indian Courser and Stone Curlew: Birds That Disappear When Trees Arrive

A bird that looks exactly like the ground it stands on is easy to miss. The Indian Courser and the Indian Stone Curlew have spent millions of years perfecting that trick, and it has served them well against every predator evolution could throw at them. What it cannot protect them against is a shovel and a sapling.Both birds belong to a guild of species ecologists call open-country obligates: animals whose entire biology is calibrated for landscapes with no tree cover, thin or absent grass, and a clear line of sight in every direction. In India, that habitat is scrub desert, rocky plateau, fallow agricultural land, and the stony wastelands that most land-use planners still classify as degraded and in need of improvement. Planting trees on that land is not restoration. For these two birds, it is replacement.

The Indian Courser (Cursorius coromandelicus) is a wader that never wades. It belongs to the pratincole family but runs across bare, sun-baked soil in short sprints, tilting forward to pick invertebrates off the surface the way a thrush works a lawn, except the lawn here is almost nothing. Its plumage, chestnut crown, white supercilium, warm buff underparts with a black breast patch, is a precise match for laterite gravel and dry red earth. Flush one and it lands forty metres away and becomes the ground again within seconds.The Indian Stone Curlew (Burhinus indicus), called the Indian Thick-knee in some field guides, is a nocturnal or crepuscular bird with enormous yellow eyes built for low-light hunting. Its cryptic streaked-brown plumage breaks up its outline so completely against pebbles and dry leaf litter that experienced birders describe it as a rock that blinks. It nests directly on bare ground with no nest material at all, laying one or two eggs that are themselves patterned to match the substrate. The eggs are not hidden. They are disguised.Both species share a core biological requirement: they need to see a predator coming from a distance. That requires open ground. Shrubs, saplings, and grass taller than ankle height all break that sightline and make the habitat functionally unusable, regardless of how undisturbed the soil beneath is.

India's national and state afforestation programmes have planted hundreds of millions of trees over the past three decades, often under compensatory afforestation schemes tied to forest clearances elsewhere. The targets are measured in hectares and tree counts. The land selected is typically revenue wasteland, common land, or degraded scrub, exactly the category that includes the stony plains and open scrub that Coursers and Stone Curlews depend on.The ecological problem is not trees in principle. It is trees planted on land that was never forest to begin with. Peninsular India's Deccan plateau, the scrublands of Rajasthan and Gujarat, the rocky outcrops of Andhra Pradesh and Telangana, these are not degraded forests waiting to recover. They are mature, stable, non-forest ecosystems with their own species assemblages. Planting eucalyptus or Prosopis juliflora across them does not restore anything. It converts one kind of habitat into another, and the species that depended on the original have nowhere to go.Ecologists Jayashree Ratnam and Mahesh Sankaran, among others working on India's open ecosystems, have documented how this misclassification drives well-funded habitat destruction under the banner of greening. The Courser and Stone Curlew are among the clearest indicators of how that plays out at the species level, because their distribution maps almost exactly onto the land parcels that afforestation schemes most frequently target.

Bird surveyors use indicator species to read landscape health quickly. A thriving population of Indian Coursers in a scrubland patch tells you the ground is still open, the invertebrate prey base is intact, and human disturbance has not yet crossed a threshold. Their absence from a site they previously occupied tells you something has changed, even if the change looks like improvement to a non-specialist.The Stone Curlew adds a second signal. Because it nests directly on the ground with no concealment other than camouflage, its nesting success is acutely sensitive to foot traffic, cattle grazing pressure, and ground disturbance during the breeding season between February and May. A site where Stone Curlews used to nest and no longer do has often not been cleared or built upon. It has simply been altered just enough, a track widened, a grove planted along its edge, a seasonal pond filled, to break the conditions the bird requires.Citizen science data from eBird India shows both species declining in their range over the past decade, with records becoming patchier across Telangana, Karnataka, and western Maharashtra, states where compensatory afforestation activity has been particularly intensive. The pattern is not proof of causation, but it is consistent with what the birds' biology predicts.

Protecting the Indian Courser and Stone Curlew does not require a sanctuary or a fenced reserve. It requires recognising that the stony, treeless, apparently barren ground they occupy has ecological value in its existing state. That is a harder argument to make than planting a tree, and it has no photogenic moment attached to it.Some conservationists working with state forest departments have begun advocating for open ecosystem assessments before afforestation work begins on revenue land, a check that asks whether the site already supports species that require open conditions. The Bombay Natural History Society and independent researchers at the Ashoka Trust for Research in Ecology and the Environment have both raised this framing in policy discussions, though it has not yet translated into standard procedure.For anyone who spends time in these landscapes, the practical contribution is documentation. A georeferenced eBird record of a Courser or Stone Curlew on a specific patch of scrub creates a data point that land managers can be shown. It is harder to plant over a site that is on the map.