Plastic spikes called 'keep birds off' sold by Walmart.

Tanglefoot bird repellant

Are they gathering on the railing? At our marina, the seagulls flock on the docks, making a mess and creating a racket. The dock master has a handful of fire crackers, he'll set one off near them to break them up. Just the little ones, a pack is like a pack of birthday candles. It works!

Are you feeding them?

Fluttering strips of metallic ribbon stopped some birds from perching on my wrought iron furniture.

Those are great ideas, lukkirish! I especially like the wind sock idea, if hung right above where the birdies like to gather.

Exactly! Our railing doesn’t have a good way to hang a sock close by, so I have taller pin wheels in the bed around the deck instead. Anything with a little movement to it will work.

Thanks for the ideas! I think he pinwheels will work. Perhaps the Dollar Store will have them.

If you have any old shiny CDs to hang, that should do it.

My neighbor uses a plastic/realistic (to birds) owl on her railing and says it works.

I have a large deck, but my yard is mostly woods and have no issues with perching, which I attribute to the branches of trees being more comfortable for tiny bird feet.

It depends on the birds, but I've had some good results using bird scare flash tape. It's not very expensive and there are several ways to utilize it:

huh!! you learn something new everyday!!