The VENT group saw a huge flock of Tree Swallows flying over Ammo Dump Pond at Gamboa at 5 p.m. The same group was seen at about the same time on Friday. A H-U-G-E flock of Tree Swallows were seen by the VENT group leaded by Dr Ridgely last saturday at 5 pm, as they were flying over Ammo Dump Lake in Gamboa. The group of a few hundred birds were also seen (if not identified) on friday at about the same time.