Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Foraging site displacement in common crane flocks

Bautista1, Alonso, Alonso

  • 1Departamento de Ecología Evolutiva, Museo Nacional de Ciencias Naturales, Madrid

Animal Behaviour
|December 16, 1998
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Simple Model of Aerosol Particle Formation by the Evaporation-Condensation Method.

Journal of colloid and interface science·2000
Same author

Conformation and stability of the hydrogen-bonded complex 6-oxabicyclo

Chemistry (Weinheim an der Bergstrasse, Germany)·2000
Same author

Quantum resonances and regularity islands in quantum maps

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2000
Same author

Quantum resonances of the kicked rotor and the SU(q) group

Physical review letters·2000
Same author

Brownian motion of spiral waves driven by spatiotemporal structured noise

Physical review letters·2000
Same author

Mixed Ferrocene-Cobaltocenium Dendrimers: The Most Stable Organometallic Redox Systems Combined in a Dendritic Molecule This work was supported by the Dirección General de Enseñanza Superior e Investigación Científica (PB-97-0001). We are grateful to M. J. Vicente and Dr. M. T. Alonso for valuable discussions on ESI-MS.

Angewandte Chemie (International ed. in English)·2000

Common cranes engage in kleptoparasitism, stealing food from rivals. This behavior helps cranes recover from low feeding rates, especially when facing starvation risk.

Area of Science:

  • Behavioral Ecology
  • Animal Behavior

Background:

  • Optimal foraging theory suggests individuals maximize intake rates.
  • Intraspecific kleptoparasitism is a foraging strategy where one animal steals food from another of the same species.
  • This behavior is predicted to occur when it increases the aggressor's intake rate and benefits the victim.

Purpose of the Study:

  • To test the hypotheses that common cranes engage in kleptoparasitism to maximize intake rate.
  • To investigate if cranes attack when their intake rate is critically low for survival.
  • To determine if aggressors select victims with high foraging rates.

Main Methods:

  • Observation of 324 aggressive displacements in common cranes (Grus grus) foraging on cereal fields.
  • Measurement of individual intake rates before and after aggressive encounters.

Related Experiment Videos

  • Comparison of intake rates with flock average and metabolic needs.

    • Main Results:

    • Aggressors attacked cranes with higher-than-average feeding rates.
    • Successful attacks increased aggressor intake and decreased victim intake.
    • Aggressors' pre-attack intake rates were below flock average and survival thresholds.
    • Post-attack intake rates for aggressors increased but were not consistently above the flock average when attack time was included.

    Conclusions:

    • Common cranes utilize kleptoparasitism to recover from temporary reductions in feeding rates.
    • This strategy is particularly employed to minimize starvation risk.
    • Kleptoparasitism aids in meeting basic metabolic needs during periods of low food availability.