I learned poultry writing from observation. I try to pay attention to details. I don't just talk about chickens but what kind of chicken it is. Does it lay eggs or is it a cock? Poultry is more than generalizations and adjectives and adverbs but it is really choosing the exact noun and verb.

You could easily say:

"Why did the corny chicken walk gleefully across the broad cement road?"

But it just doesn't capture the same light as:

Twas a Tyson chicken came cross the road
Old Sammy did tell me heaven forebode
Purdue chickens just don't got the guts to splatter
On the concrete platter