FIGURE 1. A in Morphological assessment of the Common Barn Owl Tyto alba (Strigiformes: Tytonidae) supports three species

FIGURE 1. A. Typical owl skeleton highlighting the wrist area, circled in bolded black, where a ruler would be placed at its zero end, to measure the length of the wing, from the wrist to the tip of the longest primary feather (image from König and Weick 2008). B. Wing – wrist to tip length measurement being recorded. C. Primary feather shortfalls measurement with wing on paper (left) and primary feather markings being measured (right). D. Tail length measurement. E. Tarsus length measurement. F. Minimum tarsus width measurement. G. Culmen length measurement with inset sketch demonstrating where the front of the cere and tip of beak are. H. Feathered tarsus measurement. I. Hallux talon length measurement being recorded on owl with inset sketch of owl foot with hallux talon circled in bolded black.