Bird Bath Heater

FIG. 1 is a perspective view of a bird bath heater showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is bottom plan view thereof;

FIG. 9 is an enlarged view of portion of FIG. 2 ; and,

FIG. 10 is an enlarged view of portion of FIG. 4 .

The evenly spaced broken lines depict portions of the bird bath heater that form no part of the claimed design. The dot-dash broken lines encircling portions of the bird bath heater in FIGS. 2 and 4 illustrate enlarged views in FIGS. 9 and 10 and form no part of the claimed design.