An Experiment on a Bird in the Air Pump is a 1768 oil-on-canvas painting by Joseph Wright of Derby which depicts a recreation of one of Robert Boyle's air pump experiments. It shows the reactions of a group of onlookers to an experiment performed by a natural philosopher in which a bird is deprived of oxygen. Scientific curiosity overcomes concern for the bird. The central figure looks out of the picture as if inviting the viewers participation in the outcome.