Bird feeder
FIG. 1 is a front perspective view of a bird feeder showing my new design; 
     FIG. 2 is a left side elevational view thereof, the right side elevational view being identical; 
     FIG. 3 is a front elevational view thereof, the rear elevation view being identical; 
     FIG. 4 is a top plan view thereof; and, 
     FIG. 5 is a bottom plan view thereof. 
     The broken lines in FIG. 1 are for illustrative purposes only and form no part of the claimed design.