I have an L-shaped 20 x 9 ft run, and I kept it covered with bird netting (Lowe's $15 for 100 ft), but the first snow was so heavy, it pulled it all down. Since then my SLW has somehow been found on the OUTSIDE of the run (I have 3 SLW, 2 PBR and 2 BOs). I don't know if the same Wyandotte flew...