With a single shake of his owl-feathered shoulders, he orders them to wave their arms; when he oohs, they ooh back without being asked; and when he clambers into the crowd, girls hang off his skinny, black-clad limbs like limpets.
At the other end of the population scale, a single pair of snowy owls bred on Fetlar from 1967 to 1975.
Numerous rarities have also been recorded including Black-browed Albatross and Snow Goose, and a single pair of Snowy Owls bred on Fetlar from 1967 to 1975.
AMOVA also suggested that northern spotted owls represent a single population, rather than two clusters as estimated by S tructure.
In the other four runs, S tructure lumped California and Mexican spotted owls into a single cluster.
In the evaluation, the system had to perform all major functionalities of OWL reasoning in a single run: 1) consistency checking to ensure that the ontology is consistent (otherwise inferences could be invalid), 2) inferring the class hierarchy, 3) realizing the ontology, i.e., associating the patient represented as an OWL individual with matching OWL classes and inferring properties.
A video mixer (Panasonic WJ-AVE5) was fed with the video signals of both cameras, providing a single composed picture, showing the attacking owl and the defending rodent in the same frame (= same time), thus enabling us to monitor the behavior of the owl and the immediate response of the rodent from moment to moment.
A variety of owls may depend on a single prey species when it becomes exceptionally abundant.
First, grouping study areas into four clusters (including both northern spotted owl clusters) explained much less variation (3.83%) than grouping by subspecies (in which northern spotted owls were treated as a single group).
When all northern spotted owl study areas were lumped into a single group, pairwise FST values between northern and California, northern and Mexican, and California and Mexican spotted owls were 0.084, 0.095, and 0.141, respectively.
