(G4908/26 NOTAMR G4816/26  Q)ZGZU/QFAHX/IV/NBO/A/000/999/2323N11319E005  A)ZGGG B)2611020853 C)2611091559  E) ACTIVITIES OF BIRD FLOCKS AND MIGRATION WILL TAKE PLACE AROUND  AD:  1. SEASONAL BIRD MIGRATION:  BIRDS MIGRATE SEASONALLY FROM NORTH TO SOUTH THROUGH AD ZGGG AND  ADJACENT AIRSPACE.  MIGRATION ROUTE: FROM NORTH TO SOUTH.  MIGRATION TIME: ALL DAY.  BIRD MIGRATION IS RELATIVELY FREQUENT DURING 0930-2300 AT ALT OF  300M-4,500M.  BIRD STRIKES ARE MORE LIKELY TO OCCUR DURING FLIGHT PHASES AT  DISTANCE OF 10KM-35KM FROM ALL RWY THR AND ALT OF 600M-1,800M,  WHICH MAY CAUSE ACFT DAMAGE.  ACFT ARE ADVISED TO USE CONTINUOUS DESCENT OPERATIONS AND  CONTINUOUS CLIMB OPERATIONS.  2. CURRENT BIRD MIGRATION CONDITIONS:  BIRD MIGRATION HAS ENTERED THE MIDDLE TO LATE STAGE.  WEAK COLD AIR MASSES WILL FREQUENTLY MOVE SOUTHWARD ON NOV 2-3,  5-6 AND 8-9, AND SOME MIGRATORY BIRDS WILL CONTINUE TO MIGRATE  SOUTHWARD.  ATTENTION: SCATTERED LIGHT RAIN IS EXPECTED AT AD DURING NOV 4-7,  WITH RELATIVELY LOW CLOUD BASE. MIGRATING BIRD FLOCKS AT HIGH ALT  MAY FLY AT LOWER ALT, INCREASING THE RISK OF   )  // // BIRD STRIKES AT LOW AND MEDIUM ALT. LIGHT MIST IS ALSO  EXPECTED IN THE MORNING AND EVENING. FLIGHT CREWS ARE ADVISED TO  MAINTAIN VIGILANCE.  3. SPORADIC BIRD ACTIVITIES:  3.1 DAYTIME:  TIME: 2200-1030(NEXT DAY).  ALT: 0M-100M.  SPORADIC SWALLOWS, HERONS, RAPTORS AND OTHER BIRDS ARE ACTIVE,  SOMETIMES IN SMALL FLOCKS.  BIRD FORAGING ACTIVITIES MAY TEMPORARILY INCREASE AFTER RAIN.  SWIFTS ARE ACTIVE AT ALT OF 60M-200M DURING APPROACH TO LANDING ON  RWY 02R/20L/03/21/01L/19R.  3.2 NIGHTTIME:  TIME: 1030-2200.  ALT: 0M-200M.  SPORADIC HERONS, OTHER BIRDS AND BATS ARE ACTIVE.  AERODROME AUTHORITY RESORTS TO DISPERSAL METHODS TO REDUCE BIRD  ACTIVITIES.  EXERCISE CAUTION WHILE LANDING AND TAKE-OFF.   )  // //