About those raphides and nitrates...

[Folly's place]

As everyone already said, chickens ranging around who have choices tend to be careful about what they eat. Birds locked in a small space and offered one thing may eat it, toxic or not. That's a different situation.
We all have scary plants around, and mostly don't have problems.
Do be careful about plantings against the run fencing, or in their run.
Mary

 

[CannedMonster]

Supposedly my clematis is toxic to chickens but someone forgot to tell my birds.
They stripped both plants up as far as they could reach.
Interestingly, my four 1 year old birds left them alone but my younger ones went to town on them.
There’s plenty of grass, clover, etc. for them too.
They also went nuts over my hosta plants (I had to cage them) and my asiatic lilies.
I have lots of other plants and flowers in the hard and they generally leave them alone in terms of eating them.
But they will trample, scratch and dig plants too.
One positive surprise was when I scattered organic flax seeds for them last fall and the seeds ended up sprouting and growing and are now producing seeds themselves.
The chickens do eat those too and the chicks love when I drop the whole plant in the brooder.
Pretty blue flowers on those too.