Pigeons

[dukealien]

Tucked into humanity’s corners,
they coo and squabble,
flutter their gossip,
flee in noisy flight with flashes   "noisy" could be stronger
of purple and green iridescence.  line could use a little trimming?
 
One meanders, retracing his steps,  I like "one" here, can be wrongly but amusingly interpreted as indefinite first person (the polite "I")
devoid of sense or destination.
In fact, he treads an attentive orbit,
puff-chested and knight-hooded,
around a slender female.  having difficulty picturing a "slender" pigeon of either sex
 
A flat, red mess stamped on road,  this line needs some work - big theme change
stray feathers plucked in fury,
a blur of droppings like TV static, could also be trimmed a bit
they set their dramas amongst us.  very good, small suggestion below

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I like this very much!   Trying not to be too specific with suggestions (but perhaps "beating" in L3).

In L10, almost anything could replace "slender" to good effect - "checkered," "simpering," "coy," "nodding" - give it your best image!

The final line is quite nice, tempted to insert "down" after "amongst" mainly for the rhythm.

Most enjoyable.  Pick a few spots and work them intently, there's room for improvement (meant in a good way)!