Monday, 7:14 a.m. Subject displays characteristic aerodynamic posture— shoulders angled 12° into prevailing westerly, papers clutched against thorax like a kite's crossbar. Nest-building behavior observed at 0843h: stacking of rectangular objects (manila, cream, digital) into load-bearing configurations. At 1507h, a rapid shift in flight pattern— the subject banks hard toward a smaller structure, where two juveniles wait at the entrance with their mouths open. Wind speed: 38 km/h, gusting to 47. Cloud cover: scattered. The subject appears to confuse productivity with lift. Both, it should be noted, require the same thing: moving forward fast enough that falling becomes indistinguishable from flight.