Intraspecific agonistic behavior of ospreys (Pandion haliaetus)

Publication Type:

Journal Article

Authors:

Schroeder, Gary J.; Melquist, Wayne R.

Source:

Condor, Cooper Ornithological Society, Volume 77, Issue 1, p.99-100 (1975)

Call Number:

A75SCH01IDUS

URL:

https://sora.unm.edu/node/102454

Keywords:

osprey, Pandion haliaetus

Abstract:

During the 1971 nesting season, the senior author kept three active Osprey nests under periodic surveillance to gain information on the behavior and food habits of Ospreys. Behavior at or near each nest was recorded from dawn to dusk. Nest 24, located on a piling in southern Lake Coeur d'Alene, Kootenai County, Idaho, was observed on 1 and 16 July. Nest 301, located on a piling near Sandpoint in Bonner County, was watched on 15 July, 4 and 11 August. Nest 512, located in a live conifer about 7 km up the Selway River from Lowell in Idaho County, was observed on 7 and 27 July. Several instances of intraspecific agonistic behavior involving the nesting pairs, their nestlings, and intruding Ospreys were observed.