Being Aware of the Potential for Reinvasion There is an extensive network of monitoring equipment on both Pomona and Rona Islands. This includes:
Stoat traps
Mouse traps
Bait stations
Rat and mouse motels
Chew sticks
A deer pen.
These are all checked regularly and this lets us know whether pests such as rats, mice or stoats have made their way back to the islands. If evidence of a pest is found, the Trust has strategies in place to respond quickly to remove those pests. With good quarantine measures in place, we are hopeful that any re-invasions are kept to a minimum.
Incursions to-date are:
a single mouse was trapped on Pomona (July 2009) and also on Rona (June 2009). Quick response from the Trust, setting out more traps for mice found no further mice in 2009.
three stoats were trapped on Pomona in February 2010.
a single mouse was trapped on Rona in March 2010.
It is assumed that these are all reinvasions, probably by animals swimming to the islands.