Bird burst

{
  "id": "MLC-T-MET-003927",
  "term": "Bird burst",
  "field": "Meteorology and atmospheric science",
  "definition": "A characteristic pattern on a weather radar display caused by a large flock of birds taking off at once, typically from a roosting site around sunrise. The phenomenon appears as a rapidly expanding, circular ring of low-to-moderate reflectivity on the radar image. Doppler velocity data confirms the pattern by showing outbound velocities in all directions from the ring's center, distinguishing it from precipitation.",
  "url": "https://mlchart.com/terminology/meteorology/bird-burst/"
}