Depending on their normal food they might like to eat some protein.
Once they are filled up, change their appetite or the grasshoppers are all eaten up, you take the ducks/chickens out of the garden.
If you would like to keep the tasty plants (and the grasshoppers left any), leaving the ducks and chickens unattended in the garden is probably not wise.
Or you could try to put individual ducks/chickens into the garden and keep those that prefer the grasshoppers over the plants…
This years menu for them:
2) young and tasty slugs
3) young goutweed leaves
4) low hanging berries
5) high hanging berries… they can reach up to 60cm ~ 2ft
6) various lettuces
8) poppy leaves
9) some bean leaves
(I didn't try the first two)
I had to move the kitchen compost into a barrel because they kept eating the moldy stuff with obvious consequences to their health.
So… I would not assume that the ducks will behave.
Either keep an eye on them or plant far more then you want to eat yourself… The eat a lot!
Jade Crowley wrote:I had never even thought about letting the chickens in, I have been fighting to keep them out for weeks, just finally got them completely fenced out and the grasshoppers took over. I would venture to say its connected. The ducks were acquired with the intention of putting them in the garden but I have read they will kill the little seedlings, however the grasshoppers have done a mighty fine job of that themselves so I guess it no longer matters. So I let the chickens in the garden with supervision for about an hour today and they ate a ton of grasshoppers. As soon as they lost interest in the grasshoppers I kicked them out. The ducks may take up semi-permanent residence there if they can behave. You may be on to something here. Thanks!!
I sometimes let my chickens out just for an hour or so before dark so they can fill up on bugs and they put themselves back into the pen as soon as it starts getting dark. If you are there that time of day it works pretty well.
I don't know if all ducks will behave the same, but if the grasshoppers are killing the plants anyway, it really can't hurt to try. Good luck anyway!