In Africa, many rural farming households keep indigenous chickens (Gallus domesticus) in traditional scavenging systems characterized by low input and low output. To improve productivity, African governments and development partners disseminate a management intervention package consisting of feed supplementation, vaccination, brooder, chick rearing equipment and improved housing. Some smallholder farmers adopt the full package, while others adopt the feed supplementation and vaccination only, or the feed supplementation and brooder only. This study surveyed 120 households in western Kenya and analyzed the data using a multinomial logit model to examine these adoption patterns. The factors that were found to significantly influence adoption were access to extension services, female gender, education level, membership of farmer groups and off-farm income. We therefore recommend the formulation of pro-poor policy, focusing on improved extension programs, formation of farmer groups, encouragement of off-farm income earning and improvement of smallholder farmers’ socio-economic conditions, to enable these farmers to adopt the package.