UFO Sighting in Pembroke Pines, Florida on June 29th 2015 – Object zipping by but filmed at n slo mo

Ok so I shot this in slo mo on iphone6 I was filming raindrops as soon as it goes to slo mo something shoots across screen fast but iam in slo mo so I can't explain it. It can't be a bird I filmed slo mo birds and they don't move that fast