My husband and I were watching chicken TV last night, they were all scratching, sitting on their outside perches, dirt bathing, when all of a sudden, they all stood completely still, a few of them high tailed it under the coop, one squatted in the corner of the run. Put the ones standing stood there for about 1 minute, then they too ran under the coop. Finally the one that had squatted ran under the coop. The were all squatting under the coop, VERY quiet. My husband and I did not see anything, or hear anything. They stayed there for a good 15-20 minutes. We could not coax them out with treats, sweet talk or anything. When they finally came back out, one at a time, they stayed close to the coop, and not long afterwards, went inside. What in the world? We were wondering if we should take cover.