Typescript.
Includes vita and abstract.
Bibliography: Includes bibliographical references (leaves 63-68).
Description: viii, 68 leaves : map ; 29 cm. / The ability of the Pigeon Guillemot Cepphus columba to
rear an additional chick was tested by manipulating clutch
sizes. The effect of the manipulations on growth, and
hatching, fledging, and egg success was measured in chicks
from experimental, natural, and control nests. No
significant differences were observed between the nest
types. Data from 1983, 1984, 1985, and 1989 were analyzed
for potential differences in reproductive success of one and
two egg clutches. The ratio of one to two eggs was
significantly higher in 1985 and 1989. Hatching and
fledging success was significantly higher for two egg
clutches in 1985 and 1989. No significant differences were
observed for egg success. Egg volume was significantly
greater in two egg clutches in 1983 and 1984. Egg volume
was correlated with fledging but not with hatching success.
| Identifer | oai:union.ndltd.org:uoregon.edu/oai:scholarsbank.uoregon.edu:1794/9928 |
| Date | January 1991 |
| Creators | McLaren, Elizabeth B., 1962- |
| Publisher | Thesis (M.S.)--University of Oregon, 1991. |
| Source Sets | University of Oregon |
| Language | en_US |
| Detected Language | English |
| Type | Thesis |
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