File:Funnel trap.jpg

English: Funnel trap used to capture newts during the breeding season. Traps were positioned with the diagonal of the semi-circular funnel flat to the pond bottom. The position of the narrow opening in between the two chambers is indicated by line ‘a’. Line ‘b’ indicates the section of the trap that stays above the water surface, if so needed with the help of a polystyrene floater. The anterior chamber can be opened for inspection at position ‘c’. The iron poles at either side are M10 threaded rods, so that the tension applied to the cords is easily adjusted. The sheet of paper is of A4 size. One functional difference with most other funnel traps is the extension at the front that enlarges the catchment area.