A "jizz whaler" is a term used in birdwatching to describe an individual who specializes in identifying birds based on their unique characteristics, or "jizz." This includes aspects like shape, behavior, and flight patterns, rather than relying solely on physical features or vocalizations. The term emphasizes the importance of instinct and experience in recognizing species. The concept of jizz is often associated with the work of ornithologists and birdwatchers, who may use field guides and resources to enhance their skills. Understanding jizz can improve identification accuracy, making it a valuable tool for enthusiasts and professionals alike in the study of birds.