So well camouflaged, I nearly tripped over this individual. Largely nocturnal, this species is confined to coastal deserts of western South America. Its life history is very poorly known. In fact its nest and eggs were not described to science until 1981. Thick-knees are in their own family. They were formerly thought to be related to Bustards but similarities are due to convergence. Digiscoped with Panasonic DMC-LX5 | Nikon FS 3 | 30XWA | hand-held, no adapter.
References:
Hume, R., Kirwan, G.M. & Boesman, P. (2018). Peruvian Thick-knee (Burhinus superciliaris). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/53771 on 17 January 2018).
Peruvian Thick-knee (Burhinus superciliaris), In Neotropical Birds Online (T. S. Schulenberg, editor). Cornell Lab of Ornithology, Ithaca, New York, USA. retrieved from Neotropical Birds Online: https://neotropical.birds.cornell.edu/Species-Account/nb/species/petkne1
Williams, Morris D. (1981). "Description of the Nest and Eggs of the Peruvian Thick-Knee (Burhinus superciliaris)". The Condor. 83:183–184.