In this brief, whimsical documentary, the UK director Eleanor Mortimer turns her camera's gaze on urban birdwatchers as they wait for, observe and marvel at the peregrine falcons hovering above Sheffield in the north of England. The result is a beguiling look at a uniquely human condition: envy of flying. Or maybe it's something else that turns these city-dwellers' eyes skywards. The pleasures of birdwatching are many; the words to describe them are perhaps best left to the poets among us.