Three lines, sixteen syllables, no punctuation, and still Dave Bonta manages a small reversal. A picnic is something people do to a landscape: they sit on it, admire it, eat in front of it. Here the landscape gets a meal of its own. While "dinner in the outback" is going on, "the land bit off some sun / behind the hill."
The central idea is that a sunset can be seen as an act of eating. When the sun sinks partway behind a ridge, the bright disc is left with a curved edge missing, like a biscuit or a slice of fruit with a bite taken out. Bonta never writes "sunset," "orange," or "glow." He gives one verb, "bit," and lets the reader's eye supply the rest. The picture is finished in the reader's mind, which is why it lands so cleanly.
The title matters here. "Picnic" promises something relaxed and human, but the poem contains no "we" and no "I." The diners exist only as the word "dinner," a slot in the day, while the land is the only grammatical subject and the only thing that acts. Judging by this, the poem shifts our attention from the people eating to the thing around them that is also hungry. The word "outback" deepens the effect. It suggests a vast, dry, remote place (I am inferring the setting from the word itself), where a hill swallowing the sun feels like a large event and the land's appetite seems to match its size.
The sound of the poem supports the metaphor. There is no rhyme, which suits something that reads like a casual remark at the table. The syllable counts run six, six, and four, so the shape is long, long, short. It resembles a haiku in its brevity and its focus on one image, but it does not follow the five-seven-five pattern. The short last line drops away like the sun itself. Line two is the most physical: "the land bit off some sun" is five single-syllable words in a row, each nearly equal in weight, so the line has to be chewed rather than glided over. Hard consonants add to the effect, and the b sounds of "outback," "bit," and "behind" land like small bites spread through the poem.
The word choices are quietly clever. "Some sun" treats the sun like bread or cake, a mass noun you could be offered a portion of. That one word shrinks a star to a snack. "Some" also tells us the meal is not finished: only part of the sun has gone, so the poem catches the sunset midway, just as the picnic is. And "bit off" suggests something torn from a whole, which gives the verb a slight edge. A gentler word like "touched" or "covered" would not carry it.
The line break leaves a small ambiguity. "Behind the hill" can attach to the biting (the land took its bite behind the hill) or to the sun (the sun that is behind the hill). Either reading works, and the second makes the hill almost like a mouth or a table edge where the sun disappears. The lack of capital letters and a full stop adds to this. The sentence never closes, so we are not told whether the sun will be finished off or simply left half-eaten.
The poem is significant for what it does with so little. It takes something enormous and ancient, the sun going down, and brings it to the scale of a family meal, without making it sentimental. There is a trace of humour in the idea of the earth sitting down to eat, and a trace of unease too, since a land that bites is not entirely friendly and the darkness it brings is real. For students, it is a good example of how a single well-chosen verb can carry a whole metaphor, and how a title can change the meaning of what follows. We expected to watch the scenery, and instead the scenery had dinner.