weird wind day

First winds came out the South west  with a good lift-off of Board-wings then for several hours just a few birds . The wind became calm and started to get warm so I took off my winter coat put in the car and turned around to get hit with a cold wind out of the East! So put on the winter coat and watch the wind turbines turn all the way to the Southeast! By then everybody had left,being a couple hours till the watch was over then came the Broad-wings and Golden Eagles with several  hundred Broad-wings and 5 more Golden Eagles. Never can tell!