Michael Viney responds to queries and observations on nature.
One night at the end of January I heard a noise at the window. When I investigated I found a great diving beetle. Was it early for it to be flying? Sabine Springer, Kinvara, Co Galway
The great diving beetle lays her eggs in early spring. They fly at night as the reflection of water in moonlight gives them the location of pools. But they can be deceived by light on glass. The full moon had just passed at the end of January.
I have observed white-tailed bumble bees throughout January and into February. Is it unusual for workers to survive the winter?
S. Flynn, Ballybrack, Co Dublin
They were queen bumblebees. They hibernate in autumn and come out in spring - although usually not this early - and for a few weeks feed on pollen and nectar. The queen then finds a suitable nest, makes a wax cell and lays a number of eggs in it.
When the eggs hatch she feeds the grubs and when they pupate and become fully grown they are the new workers. The queen continues to lay eggs, which are reared by the workers.
Send observations to Michael Viney, Thallabawn, Carrowniskey PO, Westport, Co Mayo (include a postal address)
