Winter wind protection and use of summer breezes to advantage are essential to successful feedyard operation. Cold drafts and winds promote stress and re- strict normal cattle production. Research on wind effects on cattle has shown that hair coat, color, and sunshine all have an influence on their heat losses. Consequently, the increase in feed intake and heat loss caused by the wind are variable. In general, how- ever, a 20 mile per hour wind is considered equivalent to an extra 30 degrees of cold. Winds often blow a considerable amount of feed from exposed feedbunks. This leaves the coarser, less palatable portions. Wind also dries out exposed feed and carries off nutrients. Snow drifts in the cattle yard and travel areas are a problem. Summer breezes assist cooling, but also carry odors, dust, and windbreak fencings have been used for wind protection of eating, watering, and resting areas about the feedyard. Location and construction of these windbreaks will be discussed here. Use windbreak fencings to supplement natural wind barriers of larger scale. When available locate, arrange, and develop cattle areas to utilize trees for winter wind protection, to control snow drifting, and provide shade in summer. Take advantage of hills, buildings, and hay stacks to provide general winter protection and yet take advantage of summer air movement and allow for feedyard drainage. Remember that when the speed of wind is slowed, blowing snow drops out and piles up. Usually this drifted snow has to be moved out of the cattle and working areas to permit winter traffic and reduce spring thaw problems: So, slowing or stopping the wind can change one problem to another.