Editing American tree sparrow (section)

== Diet and behavior ==
These birds forage on the ground or in low bushes, often in flocks when not nesting. They mainly [[Seed predation|eat seeds]] and [[insect]]s, but also eat some [[Berry|berries]]. They are commonly seen near feeders with [[dark-eyed junco]]s.

=== Nesting and breeding ===
American Tree Sparrows typically nest on or near the ground. The nest is composed of fine grasses, feathers, mosses, twigs and strips of bark.<ref>{{Cite web |title=American Tree Sparrow Life History, All About Birds, Cornell Lab of Ornithology |url=https://www.allaboutbirds.org/guide/American_Tree_Sparrow/lifehistory |access-date=2025-04-23 |website=www.allaboutbirds.org |language=en}}</ref>   

Despite laying one egg per day over a week, the hatching of the chicks is syncronized to within a few hours of each other. Because of this, all the chicks fledge and forage together. <ref>{{Cite web |title=American Tree Sparrow Overview, All About Birds, Cornell Lab of Ornithology |url=https://www.allaboutbirds.org/guide/American_Tree_Sparrow |access-date=2025-04-23 |website=www.allaboutbirds.org |language=en}}</ref> Breeding pairs do not stay together after the season.<ref>{{Cite web |title=American Tree Sparrow Life History, All About Birds, Cornell Lab of Ornithology |url=https://www.allaboutbirds.org/guide/American_Tree_Sparrow/lifehistory |access-date=2025-04-23 |website=www.allaboutbirds.org |language=en}}</ref> 

=== Call ===
This bird's song is a sweet high warble descending in pitch and becoming buzzy near the finish.