I think that where I live today the rain has actually attracted more birds into my garden. I must of counted a least 20 House Sparrows all at one time with around 5 Starlings, two blackbirds and then later on a Blue Tit and a Pigeon. The bird table was so full of birds I don't think that you could of fitted another one on and the ground was alive with House Sparrows. I don't think I have ever seen so many Sparrows at once.
And so what seems to keep most gardeners inside brings more birds out.