FW: Seeking advice

[Peter Cranston via Canberrabirds <>]

It remains possible that the dew was condensing onto spiderlings, drifting at that time.

Pete

On Mon, 3 Mar 2025 at 11:45, Geoffrey Dabb via Canberrabirds <> wrote:

Aha.  It looks as if ephemeropterists can lay down their nets.  Peter Cranston has mentioned the possibility of a heavy dew.  When I was approaching Bungendore I needed to use screenwipers despite apparently clear weather.  It seems I was photographing falling dewdrops.

 

 

 

 

From: Canberrabirds <> On Behalf Of Geoffrey Dabb via Canberrabirds
Sent: Monday, 3 March 2025 10:32 AM
To: Canberrabirds <>
Subject: [Canberrabirds] Seeking advice

 

I need an entomologist.  At least that’s what  I think I need.  Lake George again, early morning.  My early snaps captured zillions of tiny pale spots along with birds (example below, might need enlargement)). I must have got only those in the shallow focal field.  I thought ephemeroptera (mayflies).  A closer snap of ducks (3 species) shows the spots as rosette shapes (attachment).  Extreme enlargement shows rosettes of a strangely baroque pattern (bottom).  I think these might be captures of light striking the heads of the insects.  Before I go into this further I would like confirmation I am not wildly astray in thinking mayflies. Perhaps a different insect?

 

 

 

 

--
This is the email announcement and discussion list of the Canberra Ornithologists Group.
Emails posted to the list that exceed 2 MB (2,000 kB) in size, including attachments, will be rejected.
All emails distributed via the list are archived at http://bioacoustics.cse.unsw.edu.au/archives/html/canberrabirds. It is a condition of list membership that you agree to your contributions being archived.

Canberrabirds mailing list

https://lists.canberrabirds.org.au/mailman/listinfo/canberrabirds

ATT00001.txt
Description: ATT00001.txt