Colonially breeding seabirds: predators or prey?
Clode D (1993) Trends Ecol. Evol. 8:336–338
The evolution of aggregation in seabirds is usually attributed to predation pressure, although many authors have argued for the role of foraging constraints
to be considered. Discriminating between factors that result in group living and characteristics arising from group living has been regarded as an insoluble
problem; yet it is possible to test the predictions of the different models proposed to explain colonial nesting. The resulting explanation suggests that
seabird aggregations have evolved in order to utilize a dispersed and unpredictable food supply. As such, colonial nesting leads to increased vulnerability
to predation, rather than being a strategy adopted to combat it.
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