In a standard calving, the Moocall sensor will send two High Activity alerts approximately one hour apart, usually around 1.5 hours before the calf is born.
In some cases you may receive alerts when the cow is not yet calving, or alerts earlier than expected. This can happen for several reasons.
Common Causes of False Alarms
1. Sensor fitted too tightly
If the sensor is over-tightened, it may detect more movement than normal.
Solution:
Ensure the sensor can move slightly on the tail but is still secure.
2. Sensor left on the tail too long
The sensor should not remain on the cow for more than 4 days continuously.
After several days the cow may become irritated and move her tail more frequently.
Solution:
Remove the sensor for 3-4 hours and refit it if calving has not started.
3. Sensor fitted too low on the tail
If the sensor is positioned too low, normal tail movement can trigger alerts.
Solution:
Attach the sensor opposite to the vulva or higher on the tail:
4. Increased activity in the shed
Some situations may cause cows to move their tails more than usual.
Examples include:
Fresh straw added to the bedding
Another cow calving nearby
Lice causing the cow to scratch
Severe mastitis or discomfort
These situations can trigger alerts even though the cow is not yet calving.
Early Alerts or Difficult Calving Situations
If alerts occur but calving does not progress, it may indicate that the cow is experiencing difficulty during labour.
Some known causes include:
The calf has died before birth
The calf is too large to pass naturally
The calf is not positioned correctly (legs back, head down, backwards presentation)
The cow's cervix does not fully open
The cow suffers a prolapse before calving
Mineral deficiencies (such as low Selenium or Calcium)
A very active calf moving heavily before birth
IMPORTANT: If you receive alerts but there is little progress in calving, we recommend checking the cow as soon as possible, as assistance may be required.
Still need help?
If you are unsure why alerts are being triggered, please contact the Moocall Support Team and provide:
Your sensor number (MCXXXXXX)
The cow’s status
The time of the alerts
Our team will be happy to help.
Moocall Customer Service and Sales:
