Garden birds are sticklers for punctuality

sir – We have several bird feeders in our garden. At times there are three or four birds on each feeder, with others waiting nearby for their turn or squabbling with those already there. At other times there is not a single bird on any of the feeders.

Do birds have regular mealtimes? Ian Henderson

Dormansland, Surrey

Having their seed and eating it: colourful goldfinches stop for a peck on a garden feeder