SAA officials describe the crash at a press conference.
Howard R. Trojanowski, a Pierre-bound
2-year-old field sparrowwho had been licensed to fly since two weeks after he
was hatched and had logged over 60,000 flying hours, departed from a ledge near
Sioux Falls Regional Airport
at 11:04 a.m. CST. Trojanowski never reached his intended tree branch, instead
striking a tempered-glass picture window 2.5 miles northwest of Mitchell 74
minutes after takeoff at an estimated speed of 39 mph.
There were no survivors.
SAA Commissioner Vincent Stivolo said the
crash was likely due to glass, a "common, yet not fully understood phenomenon"
in which an area normally blocked by such barriers as curtains, blinds, or
shutters suddenly appears to be an open passage to an indoor facility or an
unobstructed extension of the outdoor environment.
Conclusive explanations have historically
eluded sparrow-crash investigators, some of whom have themselves apparently
fallen victim to the phenomenon. Three investigators dispatched to the Mitchell
site failed to show up and have since been reported missing.
"Flight records indicate that Mr.
Trojanowski unexpectedly diverted his route above the corner of St. Ray Street and Longfellow Drive ,
and began a slow descent when he noticed a colorful hanging potted plant about
15 feet below SAA-regulated minimum flying altitude," said Stivolo, a
sparrow. "It is at this point that we believe he made the fatal decision
to make an unscheduled landing on the plant."
A chart of Trojanowski's flight path.
"Our thoughts and prayers go out to
Mr. Trojanowski's wife and four eggs," Stivolo added.
The SAA has officially ruled out sparrow
error, finding no evidence that Trojanowski tried to swerve out of the way.
Additionally, his Glass Proximity Warning System failed to activate until 0.001
seconds after he came into contact with the glass.
An autopsy performed late Monday evening
suggests that Trojanowski's crown struck the impenetrable transparent terrain
first, followed by the left wing, which snapped in half on impact.
According to sparrow coroner Stephanie
Barlow, an inspection of the scattered wreckage at the crash site revealed no
prior damage to the wings, tail, or any other part of Trojanowski.
"This bird was in good, airworthy
condition before takeoff for this routine flight—one that he had made literally
thousands of times before," Barlow said. "But unfortunately, this
happens all too often, even with the most experienced fliers."
"Should birds stop flying? No. But we need to raise
awareness of this invisible killer."
Since the advent of the clear glass window
in the 16th century, untold billions of birds have been lost or severely
injured in similar incidents. In the early 1940s, thousands of brave bluebirds
were sent on risky solo missions to break the glass barrier, resulting in the
largest full-scale loss of bird life in over 50 years.
The worst individual crash, however, came
in 1896, when a flock of migrating birds collided with the bay window of an East Texas mansion, killing all 167 passenger pigeons.
In a ceremony scheduled for Friday, a red
and green plastic seed dispenser hanging on a tree at the crash site will be
renamed "The Howard R. Trojanowski Memorial Feeder."
As news of the tragedy spread, the SAA
reported no drop-off in sparrow flights since the fatal crash.
"Of course it's scary, but I'm not
going to stop flying because of it," sparrow Darryl Beardsley said,
echoing the apparent sentiment of millions of other sparrows worldwide. "I
guess it's just my nature."