Are these types of ivy poisonous?

[Liamm_1]

One more post, because I just realized the original poster's query was to whether or not these plants were poisonous for his chickens.
So, is the solution to apply poison to the ground to eradicate the harmless plants?
Think about this folks.
And many may not be educated about why that is harmful, so let me briefly explain:
Whatever is on your ground when it rains, gets either soaked into the ground, and heads for the water table, or washed away, down the drains in the street, heading for (eventually) your and my drinking water. So, I take great offense at anyone polluting, or suggesting to others to pollute MY drinking water.

 

[Xtineart]

I was just coming to check as my chicks have suddenly discovered the huge Ivy plants that grow wild in the woods, and through and all over my fencing here and are having a right good munch. It doesn't seem to be doing them any harm and it would be really difficult to remove or stop access to it, so hope it's OK