Quick Answer
Mergansers generally prefer freshwater habitats, such as rivers, streams, and lakes, where they can be found foraging for fish and other aquatic prey. However, they will occasionally venture into brackish or saltwater areas in search of food or during their migrations. Freshwater is their primary source of sustenance.
Habitat Preferences
Mergansers are highly adaptable waterfowl species that can thrive in various aquatic environments. In North America, common mergansers, for example, are primarily found in freshwater habitats, with a preference for areas with slow-moving water, submerged vegetation, and abundant fish populations. They can be found in rivers with depths ranging from 1-20 feet, where they can easily maneuver and feed on fish, crayfish, and other aquatic prey.
Foraging Techniques
Mergansers are skilled foragers that employ a range of techniques to catch their prey. They use their agile bodies and powerful tails to dive and pursue fish in the water, often reaching depths of up to 10 feet in search of food. In addition, they will also forage for food at the water’s surface, using their distinctive bills to catch fish and other aquatic animals. When hunting for crayfish, mergansers will often wade in shallow water and use their sensitive bills to probe for their prey.
Hunting Considerations
When hunting mergansers, hunters should consider the bird’s habitat preferences and foraging techniques. This may involve targeting areas with slow-moving water and abundant aquatic life, such as river bends or lake edges. Hunters should also be prepared to adapt to changing weather conditions and water levels, as mergansers can be sensitive to these changes. Effective hunting strategies may include using decoys, calling, and movement to attract mergansers and increase the chances of a successful hunt.
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