Ecology and behaviour of the Alder Flycatcher Empidonax alnorum, Tyrannidae in winter
By: M. Foster
Edited by: N.J. Adams and R.H. Slotow
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Abstract
The Alder Flycatcher Empidonax alnorum (Tyrannidae) winters from Colombia and Venezuela, south to northern Argentina. We studied the species in Manu National Park, Madre de Dios, Peru. In this area the species occupies riparian zones along lowland meander rivers as well as adjacent transition zone forest in the floodplain. These habitats have a number of age-related longitudinal zones (parallel to the river margin) that are short term (I-2 year) transitory stages in the succession to floodplain forest. The fast growing plant species that make up these habitats are suitable for commercial harvest for paper pulp. We examined habitat use of the species in an attempt to identify the effects of such harvest and resulting habitat loss on these birds. The Alder Flycatcher favours two longitudinal zones where it establishes territories. The territories may be long-term or transitory, and are often occupied and defended by two individuals, generally of different age. One bird tends to be more active in territory defence than the other. Defence involves patrolling, vocal duels, and chases. Birds sally for insects but also eat large quantities of fruit.
Suggested Citation
Foster, M., 1998, Ecology and behaviour of the Alder Flycatcher Empidonax alnorum, Tyrannidae in winter, chap. of Proceedings 22nd International Ornithological Congress, Durban 16-22 August 1998, Abstracts of oral presentations and posters.
| Publication type | Book chapter |
|---|---|
| Publication Subtype | Book Chapter |
| Title | Ecology and behaviour of the Alder Flycatcher Empidonax alnorum, Tyrannidae in winter |
| Year Published | 1998 |
| Language | English |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Larger Work Type | Book |
| Larger Work Subtype | Other Government Series |
| Larger Work Title | Proceedings 22nd International Ornithological Congress, Durban 16-22 August 1998, Abstracts of oral presentations and posters |
| First page | 284 (abstr |