When building a birdhouse or nestbox, the hole size (entrance) is one of the most important decisions you will need to make. Do you know that the diameter of the hole determines which birds will fit into the house and which birds will leave it alone? If the entrance hole is too large you might find less desirable birds
Winter is coming, frost and snow are a challenge to the birds that remain in the city. We can help them with some little expedient! " I was wondering where the ducks go when the Central Park lagoon got all icy and frozen?" This is what the hero of The Catcher in the Rye by Salinger, wonders about.