Bat Measurements - ISL Peru

Noseleaf length : The noseleaf is a membranous fold of skin of variable size located on or around the nostrils. This length is measured from the base of the horseshoe until the tip of the spear.

<img src="https://static.yanyin.tech/literature_test/protocol_io_true/protocols.io.ewov1oqrklr2/Captura%20de%20pantalla%202023-09-15%20a%20la%28s%29%2016.42.56.png" alt="Image illustrating how to measure the noseleaf length. Image taken from "Field Guide to Amazonian Bats"" loading="lazy" title="Image illustrating how to measure the noseleaf length. Image taken from "Field Guide to Amazonian Bats""/>

Noseleaf width: The greatest distance of the noseleaf at the level of the horseshoe.

Ear length : Distance from the notch to the fleshy tip of the pinna.

<img src="https://static.yanyin.tech/literature_test/protocol_io_true/protocols.io.ewov1oqrklr2/jyygbx73p.png" alt="Image illustrating how to measure the ear length. Image taken from "Field Guide to Amazonian Bats"." loading="lazy" title="Image illustrating how to measure the ear length. Image taken from "Field Guide to Amazonian Bats"."/>

Tragus length: The tragus is a small flap of skin in front of the external opening of the ear. The measurement corresponds to the greatest length from its base to its tip.

<img src="https://static.yanyin.tech/literature_test/protocol_io_true/protocols.io.ewov1oqrklr2/jyyibx73p.png" alt="Image illustrating how to measure the tragus. Image taken from "Field Guide to Amazonian Bats"." loading="lazy" title="Image illustrating how to measure the tragus. Image taken from "Field Guide to Amazonian Bats"."/>

Forearm length : Distance between the elbow and the wrist when the wing is folded. this measurement is taken 3 times for each bat, then averaged.

Tibia length : Distance from the proximal end of the tibia to the posterior base of the calcar.

Thumb length : From the metacarpal-phalangeal joint to the tip of the claw

<img src="https://static.yanyin.tech/literature_test/protocol_io_true/protocols.io.ewov1oqrklr2/Captura%20de%20pantalla%202023-09-15%20a%20la%28s%29%2016.41.19.png" alt="Image illustrating different variations of the thumb from "Field Guide to Amazonian Bats"." loading="lazy" title="Image illustrating different variations of the thumb from "Field Guide to Amazonian Bats"."/>

Calcar length: The calcar is a cartilage that extends from the tarsus and it is connected to the uropatagium. The length is taken from its base in the tarsus to the tip.

<img src="https://static.yanyin.tech/literature_test/protocol_io_true/protocols.io.ewov1oqrklr2/jyykbx73p.png" alt="Image illustrating how to measure the calcar from "Field Guide to Amazonian Bats"." loading="lazy" title="Image illustrating how to measure the calcar from "Field Guide to Amazonian Bats"."/>