Due to the similarity between the color variations and some species of bats, especially smaller species of bat, pipistrelle, visually there is little difference. Therefore, sometimes only morphological measurements makes it possible to accurately determine the type of. Be to, that bats are weighed (Q), before they are measured:
1 – body length (The) – from the tip of the snout to the anus;
2 – tail length (C) – from anus to tail tip;
3 – foot length (P) – from the hock joint angle to the longest finger tip (be nago);
4 – ear length (A) – from the ear to the back edge of the attachment point to the top of the cheek (without hair);
5 – ear height kramslio (Tr) – kramslio from teat to crest the top;
6 – forearm length (An) – the distance between the most protruding elbow and wrist parts (measured from the back side, folded wing);
7 – calf length (Cr) – the distance between the most protruding parts of the knee and ankle (measured bending his leg in the knee joint and the heel);
8 – tarpugalio wing width (LtA) – the distance between the ends of the wings outspread (measured lying the Treble on the back and wings as wide beam, skraidomoji the film is stretched horizontally uniform.

In addition, to determine the type of the individual instead of the bat-ringing can be applied wings mapping.

Wing tarpugalių Measurement

Ear and ear kramslio Measurement

Forearm Measurement

Calf Measurement

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