What is the participial of sentence cattle grazing in evening dusk headed toward barn?

The participial phrase in the sentence "Cattle grazing in evening dusk headed toward the barn" is "grazing in evening dusk headed toward the barn."

Here's the breakdown:

* "Cattle" is the noun, the subject of the sentence.

* "Grazing" is the present participle of the verb "graze," acting as an adjective modifying "cattle."

* "in evening dusk" and "headed toward the barn" are prepositional phrases further describing the cattle's action.

The entire phrase functions as a participial phrase, modifying the noun "cattle" and telling us what they are doing.