The first and only limerick I ever composed

Limerick - noun - a kind of humorous verse of five lines, in which the first, second, and fifth lines rhyme with each other, and the third and fourth lines, which are shorter, form a rhymed couplet.

In 2004 I was a participant in a Symposium (Microcircuits: The Interface between Neurons and Global Brain Function) in Berlin. The participants met in small groups to discuss different topics and to create a summary which would be presented to all attendees. One night at dinner there was a limerick contest between the groups. The content was to be related to the research topics being discussed. Each group presented a limerick and then another, until it was forced out of the competition when it could not. The group I was in and one other group were the last two standing. My group had two limerick experts but it was our groups turn to present and they did not have one prepared. So to keep our group in the competition, I presented the one I had written but wasn’t sure it met the qualifications of being a limerick. This gave the two experts time to regroup and the contest continued until it was finally declared a tie.

My Limerick


One microcircuit allows a locust to fly.
Another breathes but can also sigh.
A third is quite different, and
its distribution is wide.
But it moves the head & also the eye.

The pacemakers cause excitation to occur
in the complex Botzinger.
Add a dash of inhibition and
we discover what potassium
leak conductances are fer.

David Sparks

I retired in 2005 after 40 years of research and teaching at the University of Alabama in Birmingham (24 years), the University of Pennsylvania (8 years) and the Baylor College of Medicine (8 years). Photography is my retirement hobby.

Nature photography, especially bird photography, combines a number of things that I really enjoy: bird-watching, being outdoors, photography, travel, messing about with computers, and learning new skills and concepts.  I now spend much of my time engaged in these activities.

David Sibley in the preface to The Sibley Guide to Birds wrote "Birds are beautiful, in spectacular as well as subtle ways; their colors, shapes, actions, and sounds are among the most aesthetically pleasing in nature."  My goal is to acquire images that capture the beauty and uniqueness of selected species as well as images that highlight the engaging behaviors the birds exhibit.