Abstract: A method and system of determining a viewership of a media content includes displaying a media content on an outward display device. For each vehicle in a predetermined range of the outward display device, a data packet comprising data from one or more sensors of the vehicle is received. It is determined whether the vehicle is unique based on the data packet. Upon determining from the data packet that the vehicle is unique, a dwell time of the vehicle is determined with respect to the displayed media content on the outward display device.

Abstract: A bird feeder provides a feed hopper constructed concentrically around a vertical central axis and having a plurality of feeding ports evenly distributed around the central axis, and a cable reel mounted to the feed hopper and adapted to store and provide a cable for supporting the bird feeder along the central axis.

Abstract: A bird feeding device is provided with a perch which can be adjustably positioned with respect to the feeding opening to selectively accommodate different sizes of birds. The perch is movable toward and away from the feeding opening so that for larger birds the perch is positioned farther from the feeding opening than for smaller birds. The disclosed embodiment also includes a simultaneous heightwise adjustment for the position of the perch so that it is lowered when in its more extended position. Also disclosed is an improved arrangement for attaching the perch and feeding device to the container of the bird feeder. Another aspect of the invention relates to a bird feeder having a storage and feeding tube which is detachably connected to an overhead support by a quick disconnect device which provides for quick and simplified filling of the feed tubes as well as an arrangement which minimizes spilling or loss of bird seed.