The RSBP reckons that the average breeding territory is half a hectare which means our plot would accommodate three pairs. We currently have a few more individuals than that – maybe due to the rich feeding opportunities provided by vegetable bed digging?
The robins don’t include the tunnel in their territory but the wren creeps in and out at will. Inside we think the hotbed internal temperature might have peaked at a shade over 50 degrees.
The surface was at 22 degrees today when ambient temperature was around seven.