Why Birds with Deferred Sexual Maturity Are Sedentary on Islands
Author Information
Author(s): Ferrer Miguel, Bildstein Keith, Penteriani Vincenzo, Casado Eva, de Lucas Manuela
Primary Institution: Estación Biológica de Doñana, Consejo Superior de Investigaciones Cientificas (CSIC), Seville, Spain
Hypothesis
Long-lived migratory species with deferred sexual maturity cannot survive for long periods in small isolated populations, typically on islands.
Conclusion
Large birds with deferred sexual maturity tend to become sedentary on islands, which has implications for their survival and speciation.
Supporting Evidence
- 314 species of raptors, 113 species of Ciconiiformes, and 136 species of passerines were analyzed.
- 68% of the studied bird species were sedentary on islands.
- Significant differences were found between the proportion of migratory and sedentary species on islands versus the mainland.
Takeaway
Birds that take a long time to grow up and have babies usually stop moving around when they get to islands, which helps them survive better.
Methodology
The study analyzed the movement ecology of 563 bird species, focusing on their migratory and sedentary behaviors on islands.
Limitations
The study primarily focuses on specific bird orders and may not generalize to all bird species.
Participant Demographics
The study included various bird species from three orders: Ciconiiformes, Accipitriformes, and Passeriformes.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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