Distribution and status of flammulated owls (Otus flammeolus) on the Salmon National Forest

Publication Type:

Unpublished

Source:

p.25 p. + appendixes (1990)

Call Number:

U90ATK02IDUS

Keywords:

bird survey, flammulated owls, Otus flammeolus, point counts, Salmon National Forest

Abstract:

From early May to late July 1990, we conducted twenty nocturnal call surveys on the Salmon National Forest. Sixty-seven territorial male Flammulated Owls were located in Douglas-fir, ponderosa pine, and mixed coniferous forest stands. These stands were multi-storied with some mature trees usually present. Additionally, the territories were often adjacent to more open areas such as old burns, grassy hillsides, natural clearings, or clearcuts. Density estimates ranged from 0-1.25 singing male Flammulated Owls/40 ha (x = 0.41). Densities were significantly lower on the Salmon and Cobalt Ranger Districts than densities on the North Fork Ranger District, roughly corresponding to south and north of the Main Branch Salmon River, respectively. Territorial males were clumped in their distribution with apparently suitable habitat unoccupied. Male Flammulated Owls were present on the Salmon National Forest by the second week of May. One nest cavity was discovered in a Douglas fir snag; the young fledged between 19 and 22 July. Two groups of fledglings were located, one of which was verified as Flammulated owls. Other owls encountered included: Great-horned Owls, Long-eared Owls, Barred Owls, and Northern Saw-whet Owls. Cavity-nesters such as American Kestrels, Pileated Woodpeckers, Northern Flickers, and Lewis' Woodpeckers were also observed.

Notes:

Self Note: Electronic Files - Zoology: BIRDS

Copy of U90ATK02IDUS also located in K: drive.