Put on some extra you cannot stop them .
AND I would recommend keeping about a pound of grass seed on the side and once you see the grass growing in, patch up the spots where the birds got to it with the extra seed.
Okay, this may seem strange but you have to do something SO TERRIFYING that they'll stay off for good, such as:
put foil on string so it makes noise in wind scare birds off
No, birds will just land on it.
Keep Off the Grass was created in 1940.
you should keep off the grass
The cast of Keep Off the Grass - 2009 includes: Laura Orrico as Nancy
It was planted at the same time as the grass seed.
Keep down is to suppress or stifle. Keep off is to not go somewhere-keep off the grass, keep off the clean floor.
The cast of Keep Off the Grass - 2008 includes: Dustin Comstock Dusyn Dobson Cris Hidy Euphemia Nelson
Because it is not 'wrong' to walk on the grass until the sign is in place, the person placing it can walk on the grass. Then, having placed it, they must immediately step off the grass.
keep off the grass
Check the local hardware store for a plastic owl. This will keep birds away. No poison too.
I have three words for you: Call an Exterminator.
I wouldn't let you as it's my grass amd my lines so keep off my grass lol