Barking at night, argh! Need to nip in bud -how?

[PeelingmyselfofftheCeiling]

Oh my I'm tired.
MassivePup (just over a year old) has started barking at night. He sleeps in the kitchen, where he also dozes during the day, which faces a fairly quiet road. We have slatted blinds which we close each night but guess he can still see/hear things which set him off. It's not constant, but he'll bark loudly with growling a couple of times each night. Has only need doing it in the past week or two, but it's getting more regular, wakes us everytime. Expecting twins in a few weeks... Need to stop this NOW! Help!

[PeelingmyselfofftheCeiling]

Bumpity bump (before I go back to bed to try and compensate for 4 hours sleep + 7 months pregnant with twins...)

[Littlepumpkinpie]

It could be the wind howling thats making him bark. One of mine barks at the howling wind so now when its really windy I put the radio on a bit louder for her.