Patent ID: 8869743

Claim:
A top-fill hummingbird feeder comprising: a liquid container with a liquid flow opening at a lower end and a removable cap at an upper end; a feeding basin positioned below the liquid container for containing nectar accessed by birds through at least one feeding port; and a sealing mechanism associated with the liquid flow opening of the liquid container and the feeding basin, said sealing mechanism including a float valve which, when the float is in a first position, opens the liquid flow opening allowing fluid to flow from said container into said basin and, when the float valve is in a second position, closes the liquid flow opening to prevent fluid flow from said container into said basin, said float moving up and down between said first and second positions in response to changes in nectar level within said feeding basin, said sealing mechanism further including a bottle seal assemble coupled to the container and to the feeding basin and operative with said float valve to open and close said liquid flow opening, said bottle seal assembly including a bottle collar, a bottle seal and a nozzle member, said nozzle member having a central through-channel in liquid communication with said liquid flow opening.