Quantification and Sampling of Faunal Remains in Owl Pellets

Paleozoologists and taphonomists have long recognized various properties of quantification and sampling with respect to collections they study. Those same properties attend samples of modern owl pellets. The particular skeletal elements identified and the way in which prey remains are grouped for tallying both influence measures of relative prey abundance in a collection of 56 barn-owl (Tyto alba) pellets from southeastern Washington. As the number of prey and the number of pellets in a collection increases across 107 published collections of North American barn-owl pellets, the richness of mammalian genera per collection increases. As the size of the most abundant prey taxon in a pellet collection decreases, the average number of individual prey per pellet increases. Pellets with more identifiable mammalian remains contain more individual prey. Larger pellets contain more individual prey than smaller pellets. These observations indicate that the properties of quantification and sampling so well known to paleozoologists can be created during the biostratinomic phase of a taphonomic history. Modern owl pellets are an excellent educational resource for teaching principles of taphonomy and zooarchaeology.