A finely dressed young boy stands in full length before the viewer, rendered with the meticulous attention to texture and detail characteristic of Dutch Golden Age portraiture. He holds a kestrel with quiet confidence, the bird serving as both a symbol of aristocratic leisure and a testament to the sitter's privileged upbringing. De Jongh's skilled handling of oil paint brings warmth and lifelike presence to the composition, capturing the understated elegance of his young subject.