Migration & timing
Tree Swallow in California
In California, Tree Swallow is typically seen from early March through late August, peaking around early April.
Sighting 34 observations in California
Its year in California
Share of Tree Swallow observations by week. Hover a bar for the date.
early January
mid January
mid January
late January
early February
early February
mid February
late February
early March
early March
mid March
late March
late March
early April
mid April
mid April
late April
early May
early May
mid May
late May
late May
early June
mid June
late June
late June
early July
mid July
mid July
late July
early August
early August
mid August
late August
late August
early September
mid September
mid September
late September
early October
mid October
mid October
late October
early November
early November
mid November
late November
late November
early December
mid December
mid December
late December
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
- First seen
- early March
- Peak
- early April
- Last seen
- late August
Common questions
When is the best time to see Tree Swallow in California?
The peak of observations is around early April.
When does Tree Swallow arrive and leave California?
Sightings begin around early March and taper off by late August.
Tree Swallow elsewhere
More birds in California
Data: iNaturalist research-grade observations (CC0 / CC-BY), via GBIF. Excludes eBird.