To reduce feed loss during feeding could improve efficiency of feed use, and enhance animal performance and well-being. The objectives of this study were to evaluated: 1) hay dry matter loss when feeding large round bales in cone, ring, trailer, and cradle-type feeders, 2) feeding behavior for each feeder design, and 3) the relationship between feeding behavior, feeder design, and feed loss. One hundred sixty beef cows were used to evaluate the quantity of hay loss and feeding behaviors from different round bale feeders. Twenty cows were allotted by weight and body condition score to one of eight pens with four feeder designs: cone, ring, trailer, or cradle. All feeder types provided 37 cm of linear feeder space per animal. Alfalfa and orchardgrass round bales were weighed and sampled before feeding. Hay that fell onto the concrete surrounding the feeder was considered waste and was collected and sampled daily. At the end of a 7-d period, each feeder type was assigned to a different pen for a second 7-d period. Behaviors, such as feeder access, occupancy rate, and occurrence of agonistic interactions were recorded. Dry matter hay waste was 3.5, 6.1, 11.4, and 14.6% for the cone, ring, trailer, and cradle feeders, respectively. Both agonistic interactions of cows around the feeders and frequency of feeder entrances differed among feeders and were correlated to feed losses. Feeder design features including size, geometry, bar angle and spacing, and inclusion of a tip bar may affect cattle behavior and resulting feed utilization. Implementation of design strategies that reduce agonistic interactions and /or reduce feeder entrances would be expected to reduce feed losses and improve well-being.