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- Paruk, James D.
- Canadian field-naturalist 2008 v.122 no.1 pp. 70-72
- Gavia immer; energy; forage; lakes; night vision; nocturnal activity; predators
- ... Very little is known about nocturnal activity of Common Loons (Gavia immer). Knowledge of both diurnal and nocturnal behavior is needed to gain a complete understanding of their ecology. I used night vision light intensifiers to observe nocturnal behaviors of Common Loons. Results were consistent with the hypothesis that, as visual predators, loons would not forage at night and also that they w ...