No. number of the measuered specimen Replication "1 = first measurement of the specimen; 2 = second measurement of the same specimen" Collection_ID "NMB = Naturhistorisches Museum Basel, Switzerland; NMBE = Naturhistorisches Museum Bern, Switzerland; MHNG = Muséum d’histoire naturelle Genève, Switzerland" Sex m = male Age "ad = adult; indet = age not defined by preparator; juv = juvenile; na = no age indication from the preparator; vj. = bird hatched in the previous year; 1. KA =bird in its first year" Collection date day.month.year