Stercorarius

Grassland

Comprised of grasses and broadleaved herbaceous plants, and are either without woody plants.

Wetlands (inland)

Characterized by waterlogged soils, seasonal or permanent water, and vegetation adapted to saturated conditions.

Marine neritic

Submergent (below extreme low tide), nearshore, on or over the continental shelf or oceanic island shelf.

Marine oceanic

The pelagic habitat deeper than and beyond the continental or island shelf.