Nest box consisting of a hollow prismatic body, formed from wooden boards that determine a lower base (2), lateral (3), rear wall (4), front wall (5), entry (6) of access for birds, and top cover (7), is characterized by comprising means of thermal insulation (8), external anti-predation means (9), and means anti-predation internal and anti-fall of chickens (10). (Machine-translation by Google Translate, not legally binding)1. Caja nido que, consistente en un cuerpo prismático hueco, conformado a partir de tableros de madera que determinan una base inferior (2), laterales (3), pared posterior (4), pared frontal (5), entrada (6) de acceso para las aves, y tapa superior (7), está caracterizada por comprender medios de aislamiento térmico (8), medios anti-depredación externa (9), y medios anti-depredación interna y anti-caída de los pollos (10).
