Abstract: Animal ear tag assembly comprising: ear tag comprising a housing for enclosing electronic components, the housing comprising at least photovoltaic panel being arranged to form an external frontal outer face of the tag for receiving sunlight and powering the electronic componentry therein; a tether body configured to contact the animal's body during use, the tether body having an in-use upper female coupling portion for receiving and coupling an ear attachment stud member and an in-use lower cradle portion being configured for securing an attachment portion of the ear tag extending from the housing of the tag to arrange the photovoltaic panel in an outwardly facing configuration during use.

Abstract: A system for monitoring animal activity, the system comprising an animal tag having a tag identifier attached to an animal to generate animal data packets comprising timestamped location data having tag latitudinal and longitudinal coordinates and timestamped activity data relating to activity of the animal over a window of time and a processor configured to evaluate the animal data packets to determine an activity classification for the animal wearing the animal tag over the window of time. The processor is also configured to calculate a pasture performance value of the area based on the animal data packets received from the animal tag.