In my experience, birdhunting breeds are the EASIEST to train to be good with poultry.
Which makes perfect sense, if you think about it. Does a hunter want a dog who will go haring off, madly and uncontrolled at anything with feathers? No, they hunt very, very specific birds in very, very specific ways and ignore everything else.
My beagle lived happily with poultry his whole life, and only had to be scolded twice as a pup. My Golden had his own pet duck that would sleep with him.
I would definitely recommend spending some time around whatever breed you are thinking of. And, I have to agree with the folks who cautioned you about Labs. Their sweet comes in the package but their smart doesn't get delivered for about 2 years and they are chewy, chewy puppies! and you definitely want one from a breeder that health tests.
Spaniels have completely different personalities than hounds. Spend time with a few when deciding on a breed.
And know that I have lost exactly one bird to the vast majority of my dogs. Now, as a factor, I've almost always had adolescent poultry running about at the same time as a pup, and nothing is quite as determined to kill itself as a 10 week old chicken, when you combine that with an active pup. And it's not always malicious intent. Smiley the Oblivious stepped on one and Sunni loved a duckling so much (and I will love him and squeeze him and name him George, and he will be my George and we will be pals..) that she carried one around and washed it it to death, and then was very, very sad.
One mistake does not make a dog a bloodthirsty killer, untrainable for always, it's just that, one mistake and more yours than the dogs. The vast majority of dogs can be trained to be reliable around poultry.