who lived here?

found during yard clean-up, tucked into a half-dead hanging plant, this wee nest. never this summer did i see birds swooping into it, not to incubate eggs, not to feed chicks, not to urge younglings to fly. i'm distressed to have missed it all, particularly since everything happened right outside my back door. as poor consolation, i'll shelter the nest outside until after frost and freeze, then bring it into the house as a winter reminder of the spring to come.