I have loads of photographs of the doves and pigeons sitting on the g'house, they also poop on the stones and plants, my fault for building a raised bed below the hedge which is their home, I accept that it comes with the territory, my hubby however plays merry hell on a regular basis as the birds sit on the telephone cables and mess on his precious car, you could try spraying them with a hose a few times to see if that would put them off but doubt it would work, mind you your g,house would be clean again...

get a strap of nylon like you rap cardboard boxes up with or something like that that is flat and wont rot or maybe some duck tape . then get some old wire coat hangers and cut them up into 14" lengths . bend them so your left with a 2" piece in the middle of a long U shape . push this threw the tape so it sticks up ever 2" along your greenhouse ridge and it will be a thing of the past . you could also get some fine netting on 4 poles at each corner and above your greenhouse . this will stop them too . just look at public buildings wear they don't want pigeons landing and you will know what I mean .

I think they use something sticky. Contact your Pest Control Officer for advice = its their job to know.

NP that is very ingenious! It would look like some new kind of aeriel !

lol steragram perhaps it could have a duel use lol . the thing is it totally works with know harm done to the pigeons . you could just stick long nails threw some batning too mite be easier. as for the bird of prey idea it will keep all the birds out of the garden for a while till they realise like herons do with plastic herons near ponds . you can buy bird of prey kites but again its not just pigeons you scare or just your garden .

well it was just a thought sd .