Figure 1.

Diagram of the flight room and chain array

Dimensions of the flight room (m; left y and x axes) and the location of the hanging chains (filled circles) are shown. Bats were released through an opening in hanging felt (small filled rectangle) at the release point (black X) and flew down a corridor (40 cm width) through the chain array. Chains were hung in rows and columns 20 cm apart. In the Straight condition, chains were removed (open circles) from the section outlined in green, and both the red and blue sections were blocked with chains. Bats were rewarded for landing on Wall B. In the Right Turn condition, chains were removed from the blue section of the chain array, and the green and red sections were blocked with chains. Bats were rewarded for landing on Wall C. In the Left Turn condition, chains were removed from the red section, and the blue and green sections were blocked with chains. Bats were rewarded for landing on Wall A. In the Reversed Right Turn condition, bats were released from the blue X on Wall B and flew through the green and red sections, landing on Wall A. The blue section was blocked by chains. The colored lines on the right side of the array marked beam 1 (brown) and beam 2 (dark purple) show the two segments of the flightpath used for calculating beam aim. These two segments are referred to distance from the turn, as shown by the gray numbers; the turn is at 0 cm and the beginning of measured flightpath is at 300 cm. The colored lines marked speed 1 (orange) and speed 2 (purple) show the two segments of the flightpath used to calculate flight speed. Small numbered boxes around the perimeter of the room show the locations of recording microphones, and boxes labeled “v” show the position of recording cameras. Black dotted lines indicate a net that prevented the bat from flying into the rest of the room, and recording equipment was located behind the curved gray dotted line.