Description
The mute swan is the largest flying bird in the Netherlands and a familiar sight on canals, lakes, and park ponds. It's a protected species, recognizable by its orange-red bill with a black knob.
Behavior
Outside the breeding season, swans are fairly calm. During nesting (April–July), however, they're notably aggressive. They defend their nest with their wings and can deliver hard blows.
What to do
Keep your distance from nesting swans. If a swan spreads its wings and arches its neck back, that's a warning — step back. If attacked, protect your head with your arms.
Pro tip
Kayakers and canoeists: give nesting swans at least 20 meters of room. They're fast on the water and attacks from a boat are dangerous.
Interesting fact
A male swan (cob) can use its wings to fend off a fox. The force of a swan's wing strike can break an arm.