Abstract: Device for determining the weight and number of chicks or other poultry, whereby the device contains detection and transport means to guide the chicks past the detection means, whereby the detection means enable an outline of the passing chick to be determined, characterised in that these detection means enable two outlines of the same chick to be determined in at least two different directions, and whereby these detection means are linked to a data processing unit that contains an algorithm to calculate an approximate weight from the combination of two or more outlines of the individual chick that came through the detection means at that time.