Four short lines carry a single wish: to head home, and to do it the way an animal would. The speaker says "this morning," so the longing feels immediate, as if it arrived with the day rather than being something thought over for years. The verb is "would," though, not "will," which suggests a desire that may not be acted on. It reads as an imagining.
The image of the bear is the heart of it. A bear turns toward the country without fuss or explanation, guided by instinct more than by plan. By borrowing that movement, the speaker makes the wish to go home sound physical and natural, something felt in the body. The repeated "over" in "over the water and over / the fields" gives the journey a steady, rolling rhythm, as though crossing the landscape takes no effort at all.
The mood is quiet, wistful and a little wild. Home here seems less a building than a place the speaker belongs to, and the poem leaves us sensing both the distance and the strength of the pull.