Table 1. Dimensions of wind-tunnel Plecotus auritus model, with and without the tail membrane present, showing that removal of the tail membrane reduces the wing area and average wing chord of the model and increases the aspect ratio.

Variable	Model configuration
	Tail membrane present	Tail membrane removed
Wingspan (m)	0.267	0.267
Wing area (m2)	0.0124	0.0108
Aspect ratio	5.7	6.6
Average wing chord (m)	0.0465	0.0404