  We report results from the preliminary trials of Colibri, a dedicated
fast-photometry array for the detection of small Kuiper belt objects through
serendipitous stellar occultations. Colibri's novel data processing pipeline
analyzed 4000 star hours with two overlapping-field EMCCD cameras, detecting no
Kuiper belt objects and one false positive occultation event in a high ecliptic
latitude field. No occultations would be expected at these latitudes, allowing
these results to provide a control sample for the upcoming main Colibri
campaign. The empirical false positive rate found by the processing pipeline is
consistent with the 0.002% simulation-determined false positive rate. We also
describe Colibri's software design, kernel sets for modeling stellar
occultations, and method for retrieving occultation parameters from noisy
diffraction curves. Colibri's main campaign will begin in mid-2018, operating
at a 40 Hz sampling rate.
