What are 3 examples of mark and recapture?

Mark and recapture is a method used in ecology to estimate animal populations. Three examples include: 1) Capturing fish in a lake, marking them, and then later recapturing to estimate the total fish population. 2) Tagging birds in a specific area to study their migration patterns by recapturing them later. 3) Marking small mammals, like rodents, in a forest to assess their population density by recapturing them in traps.