The Common Potoo (Nyctibius griseus), is a nocturnal bird which breeds in tropical Central and South America. During the day, Common Potoos usually roost on snags, exposed branches or fenceposts, where their disruptive coloration helps them remain avoid detection.
References:
2010. Common Potoo (Nyctibius griseus), Neotropical Birds Online (T. S. Schulenberg, Editor). Ithaca: Cornell Lab of Ornithology; retrieved from Neotropical Birds Online: http://neotropical.birds.cornell.edu/portal/species/overview?p_p_spp=693936
Cuervo et al. (2003), Strewe & Navarro (2004), Azpiroz & Menéndez (2008)
Cott, Hugh (1940). Adaptive Coloration in Animals. Oxford University Press. pp. 352–353.
de Lyra-Neves et al. (2007)