If you think the nibbling is ok, please stick to ducks

it will be less painful!
Turkey nibbling becomes a big problem when they hit 20-30#
Turkey beaks are sharp!!
Bunnies. Nope on that.
Horses are a story for a different forum.
I don’t often hand feed treats to our critters. Occasionally - just to help them feel comfortable being handled in every different way.
I’m more inclined to scoop them up on occasion (ducks and turkeys a few times a week, bunnies must tolerate being pet and/ or picked up daily before dinner) and just hold them when I don’t need to do anything to them- just so they know that I won’t hurt them when and if I do need to help them w an issue.
If they like scratches, I’m happy to love on them.
If they are stressed, they can go as soon as they are calm.
It helps so very much when someone is hurt, possibly sick, or if it is time to clip wings, file nails, etc.
I’ve had some good chunks taken out of my legs by turkeys that I thought were cute when small. Now they get a firm reprimand if they think pecking is cute as a baby (usually it only takes a strong voice and perhaps a quick but careful picking up, and an eye to eye “conversation”

)
They seem to get the tone.
I’ve known too many people who have birds that attack them or someone in their family.... I don’t want my family to be in that position, so perhaps I’m a bit extra cautious on this issue!
Ducks are more docile than many other types of birds, but. I don’t feel like it’s smart to take the chance, personally.