I was working out on south end of N Spit Coos Bay collecting pink sand verbena seed this AM and early PM. We worked a patch of large plants for several hours so were basically just in one small spot the whole time. When we first arrived we jumped a Lapland that was right in the pink sand verbena patch. After a while seed collecting a harrier flew through and suddenly there were lots of Laplands in the air, I saw at least a dozen. They flew south 50 yards and landed. A while later 5 more flew right by us from a different direction and landed. I had two high calling flyovers of singles which I think were different birds during the day also. Anyhow I think 20 is a reasonable guess on numbers. Towards the end of our day the large flock flew into us and landed all around us- it was really cool. I only heard 3 pipits all day and they were high flying south. I heard SP Plovers and Leasties also out in the same area. Nice day with temps up to 70 and light winds.