Fecha de publicación: 12/06/1919 Fuente: WIPO "bee" The trap is formed by a bait chamber combined with a bird enclosure with an inlet passage or passages leading from the bait chamber to the enclosure such bait chamber having an inlet opening or openings arranged in an end or wall curving concavely on its inside. A screen is preferably arranged to extend across the outside of such opening or openings and be disposed at a suitable distance away therefrom and the inlet passage or passages extending from the bait chamber to the enclosure may have with advantage a bottom formed by a plate inclining upwards from the bait chamber into the enclosure [ 13 figures 4 claims ].