Provided herein are bird feeders configured to be positioned on an exterior window sill ledge and readily observed and maintained from the comfort of a home. The bird feeders provided herein can in some embodiments comprise a basin or other container (and optional cover) for holding and/or providing bird seed and/or feed and a compression pad configured to be compressed between a closed window and the window sill to thereby secure the feeder in place on the exterior window sill ledge. In some embodiments adjustable support members can be provided to permit the feeder to be leveled or placed in a substantially level position on an exterior window sill ledge. To refill and/or maintain the feeder a user can access the feeder simply by opening the window from the inside of the home or dwelling.