Flammulated owl migration in the southwestern United States

Call Number:

URL:

Keywords:

Abstract:

Captures of Flammulated Owl (Otus flammeolus) in mist nets from one site each in New Mexico and Arizona for periods of 7 and 5 years form the basis for this report. Owls were captured only in the spring at the New Mexico site at a lower elevation than the Arizona site where owls were only captured in the fall. Insects sampled in the ponderosa pine forest site in Arizona show that large moths are much more abundant in the fall than in the spring. The owls appear to select different migratory habitats in fall than spring. The major reason for the habitat shift appears to be an ample supply of large, nocturnal insets at higher elevations in the fall allowing the bird to efficiently exploit a migratory habitat similar to its breeding habitat.

Notes:

Reference Code: A75BAL01IDUS

Full Citation: Balda, R. P., B. C. McKnight, and C. D. Johnson. 1975. Flammulated owl migration in the southwestern United States. Wilson Bulletin 87(4): 520-533.

Location: ANIMAL EF: OTUS FLAMMEOLUS