4D4F - Moocall Calving Sensor:

Chris & John Britton from Whitcliffe Hall Farm (Ripon, GB) show us the advantages of use Moocall. This non-invasive, tail mounted sensor can accurately predict when the cow is most likely to give birth by measuring tail movement patterns triggered by labour contractions. When they reach a certain level of intensity over a period of time it then sends an SMS text alert directly to your cell phone on average 1 hour prior to calving.