Pete Oxford / Ovenbird building nest, Pantanal, Brazil

Pete Oxford / Nest of Pacific hornero {Furnarius cinneamomeus} Machalilla NP. Ecuador

Pete Oxford / Pacific hornero {Furnarius cinneamomeus} Machalilla NP, Ecuador

Pete Oxford / Rufous hornero / Ovenbird building nest {Furnarius rufus} Cerrado, Piaui, Brazil.

Pete Oxford / Rufous hornero / Ovenbird building nest {Furnarius rufus} Cerrado, Piaui, Brazil

Hermann Brehm / Rufous hornero / Ovenbird at mud nest {Furnarius rufus} Pantanal, Brazil

Hermann Brehm / Rufous hornero / Ovenbird pair on mud nest {Furnarius rufus} Pantanal, Brazil

Gabriel Rojo / Ovenbird / Rufous hornero pair at nest on telegraph pole {Furnarius rufus} Argentina

Gabriel Rojo / Ovenbird/ Rufous hornero {Furnarius rufus} Argentina

Hermann Brehm / Mud nests of Rufous hornero / Ovenbird {Furnarius rufus} Pantanal, Brazil

Hermann Brehm / Rufous hornero / Ovenbird at mud nest {Furnarius rufus} Pantanal, Brazil

Hermann Brehm / Rufous hornero (ovenbird) pair singing on nest {Furnarius rufus} Pantanal, Brazil