Facts about Lark Sparrow

1. 08

   Lark sparrows exhibit a lifespan of approximately 4-5 years in the wild, with the oldest known individual recorded at 7 years and 11 months of age.

   Lark SparrowMay 14sharebiologymeasurementlifespan
2. 07

   Pairs of lark sparrows often return to the same breeding territory year after year, with some individuals demonstrating site fidelity spanning multiple breeding seasons.

   Lark SparrowMay 14sharebehaviorreproductionmigration
3. 06

   Vocalizations of lark sparrows include a distinctive buzzing trill lasting approximately two seconds, often delivered from exposed perches during territorial defense.

   Lark SparrowMay 14sharebehaviorvocalizationbiology
4. 05

   Declining populations of lark sparrows have shifted their breeding range northward by approximately 100 miles since the 1960s due to habitat loss and climate change.

   Lark SparrowMay 14shareconservationpopulationclimate
5. 04

   Across their range, lark sparrows consume primarily seeds and insects, switching to a diet of nearly 100 percent grasshoppers and beetles during breeding season to feed their growing chicks.

   Lark SparrowMay 14sharedietbreedingbehavior
6. 03

   Lark sparrows construct their ground nests in shallow depressions lined with grass and plant material, typically laying three to five eggs per clutch during breeding season.

   Lark SparrowMay 14sharebreedingbehaviornesting
7. 02

   Male lark sparrows perform elaborate aerial displays during breeding season, climbing steeply upward while singing before diving back down to establish territories.

   Lark SparrowMay 14sharebehaviorbreedingcommunication
8. 01

   The lark sparrow's distinctive head pattern includes a chestnut ear patch and white eyebrow stripe visible across North America from March through September.

   Lark SparrowMay 14sharebiologyidentificationmigration