| 主权项 |
1. A top-fill liquid hummingbird feeder for providing liquid nectar to hummingbirds, comprising:
a liquid container configured to contain a volume of liquid nectar and having a top opening and a bottom portion with a flow opening; a cap adapted to close said top opening and to be removed to allow filling through said top opening; a liquid tray configured to connect with said container bottom portion and receive liquid nectar from said container, said liquid tray including a tray cover configured to substantially close said liquid tray, said cover including at least one feeding port passing therethrough and having a narrow elongated passageway that is sized to allow access by long-beaked hummingbirds while preventing access by bees, liquid in said liquid tray being accessible to hummingbirds only through said feeding port when said feeder is in use; and a valve mechanism including a fixed member and a movable member displaceable with respect to said fixed member, each of said fixed member and said movable member having at least one aperture, said apertures being brought into and out of alignment with one another through displacement of said movable member to selectively open and close said flow opening through which liquid in said container flows into said liquid tray, closure of said flow opening by said valve mechanism enabling said liquid container to be filled by removing said cap and adding liquid nectar through said top opening while, at the same time, preventing overflow of nectar through said feeding port. |
