Northern Rough-winged Swallow

Northern Rough-winged Swallow Stelgidopteryx serripennis

Abundance map: Pre-breeding migration

Northern Rough-winged Swallow, Abundance map: Pre-breeding migration
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Data provided by eBird

Northern Rough-winged Swallow

Stelgidopteryx serripennis

Abundance: Pre-breeding migration

Relative abundance is depicted for each season along a color gradient from a light color indicating lower relative abundance to a dark color indicating a higher relative abundance. Relative abundance is the estimated number of individuals detected by an eBirder during a traveling count at the optimal time of day.  Learn more

Relative abundance
Pre-breeding migratory season
0.04
1.6
9.3
Season date range
Feb 1 - May 17 Learn more