Automated measurement of meal sizes and feeding frequency in albatrosses.
Abstract
An artificial nest incorporating an automated weighing device, suitable for chick growth studies on some species of seabirds, is described. The operating weight range is 1-7 kg, with an accuracy of ± 15 g throughout; data can be recorded onto magnetic tape automatically and multiple nests may be operated simultaneously. Sample data from grey-headed albatrosses on South Georgia, showing the recording of the timing, size and frequency of meals and the pattern of weight loss by chicks between meals, are presented.