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Causes of high mortality of the second chick from a pair of skua (Catharaeta maccormicki) eggs; egg content and chick weights, feeding rates, parental brooding behaviour, experimental removal and starvation of chicks
Entry ID: K017_1966_1967_NZ_1


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Summary
Abstract: The cause/factors of heavy mortality of the second chick hatching from a pair of eggs at a skua nest was investigated. Previous observations found that the second chick is chased away from the nest area by the first hatched chick, most often ending in the death of the second chick. Reasons for this unusual behaviour was investigated. A detailed study of the egg content of the two eggs and the weight of the chicks at hatching was conducted. After hatching, a close watch was maintained on the chicks until fighting began and records were kept of feeding rates of the chicks and of parental brooding routine. A series of experiments in which chicks were shifted to new parents or starved at the nest by disturbing the parents were conducted to determine if hunger might be the stimulant to fighting in the chicks.
Geographic Coverage
 N: -77.1667 S: -77.1667  E: 166.6833  W: 166.6833

Temporal Coverage
Start Date: 1966-11-01
Stop Date: 1967-02-15


Location Keywords
CONTINENT > ANTARCTICA > CAPE BIRD
GEOGRAPHIC REGION > POLAR


Science Keywords
BIOLOGICAL CLASSIFICATION >ANIMALS/VERTEBRATES >BIRDS >WADERS/GULLS/AUKS AND ALLIES
BIOSPHERE >ECOLOGICAL DYNAMICS >SPECIES/POPULATION INTERACTIONS >SPECIES COMPETITION    [Definition]


ISO Topic Category
BIOTA


Platform
GROUND-BASED OBSERVATIONS    [Information]


Instrument
VISUAL OBSERVATIONS    [Information]


Quality
Field notebooks are held at the National Archives in Christchurch:

Archives New Zealand
90 Peterborough St
PO BOX 642
Christchurch
Ph: +64 3 377 0760
Email: christchurch@archives.govt.nz

Archive Reference:
CAYP 2803 CH805/187b: 1965/66 Film Micro: Information on what each film is of (i.e. photograph numbers, detail of images, date, etc), written details of sampling observations of invertebrates: habitat, location of invertebrates from November 30, 1965 to February 12, 1966.


Keywords
mortality


Data Set Progress
COMPLETE


Originating Center


Data Center
Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand    [Information]
Data Center URL: http://www.antarcticanz.govt.nz/

Data Center Personnel
Name: SHULAMIT GORDON
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


Personnel
EUAN C YOUNG
Role: INVESTIGATOR
Email: euany at xtra.co.nz


CEISHA POIROT
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: c.poirot at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


SHULAMIT GORDON
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


Publications/References
Young, E.C. The long hot summer: Cape Bird, 1966-1967. Antarctic 4(9): 440-443, 1967.

Creation and Review Dates
DIF Creation Date: 2008-10-16
Last DIF Revision Date: 2009-02-13


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