Tree Swallow

This small streamlined songbird stands out due to its bright plumage. Adult males are bluish-green above and white below with black flight feathers. Females are duller in color with more brown in the upper parts than males. Tree swallows prefer open habitats like fields and wetlands which allow them to feed on flying insects which they catch during acrobatic flight. During nesting season the female will make the nest in nest boxes on the marsh by collecting grass, hair, and other materials, she then lines the nest cup with bird feathers. They will have a clutch size of 4-7 eggs that are incubated for 11-20 days. When the chicks are born they are helpless and rely on their parents for the food

Source- https://www.allaboutbirds.org/guide/Tree_Swallow/lifehistory