Observation: Bicellonycha wickershamorum

Observation: Bicellonycha wickershamorum

Primary Observer:

Eve Berlinsky

Event Date:

2024-07-28

Status:

Verified

Survey

Site Name:

Bullpen Wilderness

Province/State:

Arizona

Event Date:

2024-07-28

Time of Day:

Night-Time

Start Time:

20:00

End Time:

21:00

Number of Observers:

6

Primary Observer:

Eve Berlinsky

Additional Observers:

Adam Browne, Rachel Dellinger, Carmine Agrifoglio, Nathan Levin, Vivian Ferguson

Target Species Genus:

Bicellonycha

Target Species Species:

wickershamorum piceum

Location and Habitat

Location Accuracy (meters):

0-25

Habitat Type:

Riparian - Areas Along lake or stream

Habitat Type Notes:

Boulder/cobble. Frequently used campsite and recreation area. Some grasses on bank but mostly rocky.

Elevation (meters):

1116

Area Searched (hectares):

0.4

Artificial Light Sources

Vehicles: No
Street Lights: No
Buildings: No

Artificial Light Types

Sky Glow (diffuse illumination in the sky): No
Light Trespass (light cast on surfaces beyond its intended target): No
Glare (bright light causing visual discomfort): No

Artificial Light Notes:

 

Observation

Observation Type:

Flashing

Number Observed:

2-10

Genus:

Bicellonycha

Species:

wickershamorum

Observation Notes:

Moved at various heights, seemed to go up and down both banks and make a big circle around area. 2nd one started flashing mush later than first, only two seen.

Specimen Voucher Number:

Flash Behavior

First Flash Time:

20:05

Last Flash Time:

20:47

First Flash Temp (F):

81.5

Last Flash Temp (F):

78.3

Flashes in Pattern:

1

Flash Color:

Yellow

Flash Pattern Period:

1

Flash Duration:

1

Flash Interval:

1

Male Height Zone:

Low (0-3 ft), High (over 8 ft)

Flash Location:

Flashed low at 8:05 and then started flying high at 8:13 and continued flashing. Moved through riparian trees mostly, not a lot of understory for them to be in.

Male Flash Behavior:

Usually would flash four times and then pause for a moment. Seemed to circle survey area while flashing.

Female Flash Behavior:

 

1 thought on “Observation: Bicellonycha wickershamorum”

  1. Nice observation!

    A few notes about flash pattern terminology:
    Flash pattern period would be the number of seconds between the start of one flash and the start of the next flash.
    Flash duration is the length of each pulse of light– this is hard to measure in the field, so it’s fine to either put “not recorded,” “brief,” or something like “<0.5 seconds." A 1-second flash duration is actually pretty long, and I think in video recordings, Bw has a flash duration of more like 0.1 seconds.
    Flash interval is the number of seconds between the end of one flash and the start of the next flash-- in simple, single-flashers, this is often just slightly shorter than the flash pattern period, but in species with multi-pulse flash patterns of long single flashes, it may be significantly shorter.
    Narrating flashes into a voice recorder/voice memo app is one way to document flash patterns in the field.

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