Common Merganser

Common Merganser Mergus merganser

Abundance map

Common Merganser, Abundance map
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Data provided by eBird

Common Merganser

Mergus merganser

Abundance

This map depicts the seasonally-averaged estimated relative abundance, defined as the expected count on an eBird Traveling Count starting at the optimal time of day with the optimal search duration and distance that maximizes detection of that species in a region.  Learn more

Relative abundance
Year-round
0
1.01
906.47
Breeding season
Jun 7 - Sep 28
0
1.01
906.47
Non-breeding season
Dec 21 - Feb 22
0
1.01
906.47
Pre-breeding migratory season
Mar 1 - May 31
0
1.01
906.47
Post-breeding migratory season
Oct 5 - Dec 14
0
1.01
906.47
Note: Seasonal ranges overlap and are stacked in the order above; view full range in season maps.
Seasons timeline
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