Red Tail Hawk Study
Authors(s): S. Cain, R. Smith and J. Dunk
Publication:
Publisher:
Publication Date: 0000-00-00
Type: annual report
Location:
Abstract: Objectives 1. To determine the influence of prey abundance on reproductive success of Red Tail Hawks. 2. To determine the influence of egg and nestling predation on reproductive success. 3. To determine the influence of inclement weather on reproductive success. 4. To determine the influence of nest-site competition on reproductive success. 5. To determine the influence of parasites on reproductive success. 6. To determine whether distance to human disturbance sources affects reproductive success. 7. To determine whether the breeding population is being recruited from within GTNP or from outside sources. Findings and Status 1. 100% of nests closely monitored (n=12) were infested with blackflies (simulium canonicolum). In total, of the 39 known nestlings hatched in 1992, 13 or 46% were killed by blackflies. 2. Micorscopic analysis indicated presence of a blood protozoan of the genus levcocytozoan in 4 of 6 nestlings necropsied in 1992.
Keywords: animal, bird, Aves, ornithology, hawk, accipiter, red-tailed hawk, Buteo jamaicensis, predation, breeding, nest, nesting, population, mortality, disease, parasite, Grand Teton National Park
| BIBLIOGRAPHY ID | 136 |
| REF TYPE | Report |
| AUTHORS | S. Cain, R. Smith and J. Dunk |
| PUB DATE | 0000-00-00 |
| DATE STR | 0000-00-00 |
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| DOC TITLE | Red Tail Hawk Study |
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| UNIVERSITY | |
| DOC TYPE | annual report |
| PUB VOLUME | 4155 |
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| KEYWORDS | animal, bird, Aves, ornithology, hawk, accipiter, red-tailed hawk, Buteo jamaicensis, predation, breeding, nest, nesting, population, mortality, disease, parasite, Grand Teton National Park |
| ABSTRACT | Objectives
1. To determine the influence of prey abundance on reproductive success of Red Tail Hawks.
2. To determine the influence of egg and nestling predation on reproductive success.
3. To determine the influence of inclement weather on reproductive success.
4. To determine the influence of nest-site competition on reproductive success.
5. To determine the influence of parasites on reproductive success.
6. To determine whether distance to human disturbance sources affects reproductive success.
7. To determine whether the breeding population is being recruited from within GTNP or from outside sources.
Findings and Status
1. 100% of nests closely monitored (n=12) were infested with blackflies (simulium canonicolum). In total, of the 39 known nestlings hatched in 1992, 13 or 46% were killed by blackflies.
2. Micorscopic analysis indicated presence of a blood protozoan of the genus levcocytozoan in 4 of 6 nestlings necropsied in 1992. |
| NOTES | |
| URLADDRESS | http://science.nature.nps.gov/servlet/Prmt_ReportSearchView?REPORT_ID=4155 |
| COPYRIGHT | |
Posted on
Sun, July 31, 2011
by Beringia South