Where are they from?
In the summer, chimney swifts can be found in the central and eastern United States. However, during the winter, chimney swifts migrate to the northwest part of South America.
What do they eat?
Chimney swifts mostly eat small insects that they capture while flying, which means that much of their diet is made up of flying insects.
How do they act?
Chimney swifts are very active birds. They roost together and pair off during breeding season. Chimney swifts that did not find a breeding partner for the season will help other breeding pairs raise their young. The chimney swift gets its name from where it builds its nest–often in dark, small places, such as chimneys.
Are they endangered?
Chimney swifts are listed as “Near Concern” with the International Union for Conservation of Nature (IUCN) Red List of Threatened Species.
Bird Blurb
Chimney swifts roost in chimneys by using their incredibly sticky saliva as an adhesive for their nests to stick on chimney walls.
What if human saliva was sticky?
Source: https://www.allaboutbirds.org/guide/Chimney_Swift/lifehistory