The ornamental design for a flycatcher, as shown and described.
FIG. 1 is a perspective view of a fly catcher showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevational view thereof; and,
FIG. 7 is a right side elevational view thereof.
The outermost broken line at the center of FIG. 4 represent the bounds of the claim, while the broken lines at the center of FIG. 4 within the outermost broken line are directed to environment. The entire bottom surface of the flycatcher depicted in FIG. 5 from the solid line inwards, including the two broken line rings, forms no part of the claimed design. The broken lines form no part of the claimed design.