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Calling Index (From the USGS Frogwatch USA website)

Index Number 0 1 2 3

Description Means no frogs of a given species can be heard calling. Means individuals of a species can be heard; calls not overlapping, can easily count number of frogs calling. Means individual frogs can be heard to call; but some overlap, can estimate number of frogs present. Means numerous frogs can be heard; chorus is constant and overlapping.

Beaufort Scale for Wind Speed (From the USGS Frogwatch USA webiste)

Beaufort Wind Scale 0

Wind Speed (mph)

Description

<1

CALM--smoke rises vertically.

1

1-3

2

4-7

LIGHT AIR--rising smoke drifts; weather vane inactive. LIGHT BREEZE--leaves rustle; can feel wind on face.

3

8-12

4

13-18

5

19-24

GENTLE BREEZE--leaves and twigs in constant motion; small flags extended. MODERATE BREEZE--moves small branches; raises dust and loose paper (too windy to monitor). FRESH BREEZE--small trees in leaf begin to sway (way too windy to monitor).


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