From previous years, it is generally the first 10 days of April when nesting tits complete their nests and the first eggs appear [at least in our garden].
A pair of blue tits took over our Maple Tree bird box early in March, and have been visiting regularly right through the last 4 or 5 weeks.
However, their behaviour has not been typical from our experience of observing via box cameras since the start of the 2009 season.
There has been plenty of interest shown by a number of local blue tits in both of our Pi powered bird boxes.
I've
also added some enhancements to our bird box monitor which sits in a
corner of our kitchen and raises the alarm if a box is triggered by a visitor.
It is the 12th March, so we may only be 2 or 3 weeks away from some real nest-building action!
As 2015 gives way to a new year, so its time to ready those bird boxes for the coming nesting season.
My original 2014 Raspberry Pi box remains unchanged, although it will be sited higher than previous years, this time maybe 3 metres up the trunk of our Canadian Maple.
But last years (2015) Picaxe + Pi box has undergone a few more changes, so maybe this is a good time to mention them.