Pastel drawing on paper. These two White Throat Swifts were rescued and cared for until ready to be released. These birds feed very specifically only catching their food, bugs, in flight. They do not perch on branches but cling to a surface with short legged talon like feet. Hummingbirds and Swift are related in terms of their leg and foot anatomy. Hummingbirds can perch but they do not walk on their feet and Swifts do not walk on their feet. When rehabilitating a Swift before release into the wild the only way to feed them is hand feeding. They will not take food from a dish like a Swallow will.