This very distinctive bird known as crestudo (in Spanish) or lark-like brushrunner (Coryphistera alaudina) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae, native to south-central South America.
About this picture: not sure what he was looking at but certainly something or someone on the floor got his attention 😊
More details about these beautiful little guys can be found in the description of a picture from this bird species that I posted on Oct 22, 2024, available at: www.flickr.com/photos/195564216@N07/54086334734/