Monitoring of Northern Forest Owls

Authors(s): K. Duffy and P. Matheny

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Publication Date: 0000-00-00

Type: progress report

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Abstract: Objectives To determine territory occupancy and nest success of the following: boreal owls, northern saw-whet owls, long-eared owls, northern pygmy-owls, western screech owls, flammulated owls and barred owls. Findings and Status Surveys for Boreal Owls were conducted on 9 nights during March and April; 12 locations were checked during surveys. One vocalizing male was detected on April 8, but was not detected during subsequent surveys. Surveys for Barred Owls were conducted on 2 nights during March at 2 locations. No Barred Owls were detected. Ice layers within the snow might result in decreased prey availability and might account for lack of detection of territorial Boreal Owls.

Keywords: Grand Teton National Park, population, animal, bird , Aves, ornithology, owl, Strigidae, Northern forest owl, nest , nesting, breeding, boreal owl, Aegolius funereus, northern saw-whet owl, Aegolius acadicus , long-eared owl, Asio otus , northern pygmy owl, Glaucidium gnoma , western screech owl, Otus kennicotti , flammulated owl, Otus flammeolus, barred owl, Strix varia , great horned owl, Bubo virginianus , habitat