bird dogging

To hound or pursue something or someone. Intended to denote positive traits of perseverance, dedication, and hard work. Without malice.

Borrowing from "Bird Dog"...
To engage in the relentless pursuit of an objective or goal, often involving the accomplishment of tasks through other, less expedient people.

Derived from the use of a bird dog to hunt game.

The Inventory Analyst succeeded in "Bird Dogging" a delivery date from his otherwise usually helpful vendor.