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Songs of male tree crickets are analyzed by counting the pulses per second or chirping pattern. Species in the nigricornis and varicornis groups are measured by counting the pulses per second. Members of the genus Neoxabea, as well as species of the niveus group of the genus Oecanthus, are measured by the number of pulses per second within a burst. Species in the rileyi group are analyzed by the pattern of pulses in each chirp. Special attention is made of the number of chirps per minute -- as it is possible to estimate the temperature using a special formula involving the number of chirps. CONTINUOUS TRILLING FOR 7 SECONDS INTERMITTENT BURSTS OF TRILLING IN 10 SECOND SPAN
INTERMITTENT CHIRPING OVER 7 SECOND PERIOD This is the sound analysis waveform for the song of the 4-spotted tree cricket: 41 pulses per second. Below is the song of the Pine tree cricket: 36 pulses in one second at 19.8 C Below is the song of the Black-horned tree cricket. Count the number of pulses in this one-second span. This is the song of the Forbes' tree cricket -- another continuous trilling pattern. This is a sound analysis waveform for the Fast-calling tree cricket. Here is a one second portion of the song of a Western tree cricket. This is a one-second portion of the song of the Narrow-winged tree cricket. Below is a one second portion from a burst of trilling by a Davis' tree cricket.
This is one second from a burst of trilling by the Two-spotted tree cricket. Two chirps in a one second span from the Snowy tree cricket. Note the 2 - 3 - 3 pattern of pulses. Prolonged chirp of Alexander's tree cricket in a one-second span. Note the 2 - 3 - 3 - 3 - 3 - 3 - 3 pattern. An even longer 'chirp' of a species found in Nicaragua. Note the 2 - 3 - 3 - 3 - 3 - 3 - 3 - 3 - 3 pattern. Analysis of a long string of chirps showed that the number of '3's varied from 5 - 11. | ||
