Note on a method for individual recognition in feed pecking in free running groups of hens

Appl Anim Behav Sci. 2001 Jan 6;70(3):239-243. doi: 10.1016/s0168-1591(00)00157-x.

Abstract

A system for automatic registration and individual recognition of feed pecking (activity and quantity) in groups of free running hens was tested. A PIT (Passive Integrated Transponder)-tag system was used to separate and register individuals when they were feeding. An electronic balance system placed under the feeder registered the amount eaten by each individual on a PC. A test with two different feed stuffs; oat and wheat was performed on three hens during a total of 6 weeks.