GPS collar on a cow (IMAGE)

American Geophysical Union

GPS collar on a cow

Caption

The cows in the study wear virtual fence collars that give signals when they are approaching the programmed grazing boundary. Virtual fences may help improve vegetation variety in grazed areas.

Credit

Timothy Olsen

Usage Restrictions

Credit must be given to the creator. No derivatives or adaptations of the work are permitted.

License

CC BY-ND

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