What make up owl pellets?

Owl pellets primarily consist of the indigestible remains of the small mammals, birds, and insects that owls prey upon. When an owl swallows its prey whole, the softer tissues are digested in the owl's stomach. The indigestible parts, such as bones, fur, feathers, and insect exoskeletons, accumulate in the owl's gizzard, which is a muscular stomach compartment that helps grind down food. These un-digested remains are then regurgitated as compact, cylindrical pellets.

The contents of owl pellets vary depending on the species of owl and its prey. Pellets from barn owls, for example, often contain small rodents like voles and mice, while pellets from great horned owls may include larger prey such as rabbits, squirrels, and birds. Pellets can also contain other items like beetles, grasshoppers, and remains of small reptiles and amphibians.

By examining the contents of owl pellets, researchers and biologists gain valuable insights into the diets and hunting behaviors of owls. Scientists collect and dissect pellets to identify the different prey species consumed by owls, providing information on the abundance and diversity of small animals in the owl's habitat. The study of owl pellets is an essential tool in ecological research and helps shed light on predator-prey interactions within ecosystems.