- Burhinus superciliaris
15.5 in. Ash-grey head with a pale eyeline and dark crown stripes. Nape and back ashy-grey with faint dark lines; back feathers are edged with black subterminal lines and ochre margins. Sandy-grey on the neck and upper chest; lower chest and abdomen white. Undertail coverts pale cinnamon. Long legs with knobby "knees". Large, pale yellow eyes.
Dry country, arid and semi-arid coastal zones, in scrub, grassy fields and agricultural land, often hiding in harvested corn fields.
Hiding at day but vocal and active at night.
Nest is a ground scrape.
- Clements, JF. 2009. The Clements Checklist of Birds of the World. 6th ed., with updates to December 2009. Ithaca: Cornell Univ. Press. ISBN 978-0801445019.
- Alvaro Jaramillo. 2003. Birds of Chile. Princeton Field Guides. ISBN 0-691-11740-3
- BirdForum Opus contributors. (2023) Peruvian Thick-knee. In: BirdForum, the forum for wild birds and birding. Retrieved 4 December 2023 from https://www.birdforum.net/opus/Peruvian_Thick-knee