The first objective of this study is to obtain basic data and information on those groups within cock fighting circle. The second objective is to assess the impact of government measures on the social and economic changes of those involved in the cock fighting circles as well as other actors, which also impact the adjustment behaviors. Findings from the second objective would lead to alternatives for major parties concerned. The circle includes owners of fighting cocks, owners of cock fighting rings, sellers of medicines and other accessories as well as cock fighting associations. The major sample of this study comprises 120 villagers who are owners of backyard chickens, three owners of small farms of fighting cock, three owners of cock fighting rings, six sellers of medicines and other accessories and two fighting cock associations. Data collection methods are interview of 120 villagers using interview schedule, in-depth interview of government officials and cock fighting ring owners as well as direct observation of fighting cock grooming by villagers, farm management by small farm owners and activities in cock fighting rings. Additional information and data are made available by livestock officers and secondary data collection (hard copies and websites). The basic findings are that owners of fighting cocks, of cock fighting rings and members of fighting cock associations are actors in the cock fighting circle due to passion in cock fighting and thus closely engaged in the circle. Only the sellers of medicines and other accessories are in the circle for financial motive. Social adjustments of owners of fighting cocks are based on tacit and explicit knowledge. The owners of fighting cocks adjusted by changing the hours when the cocks are released from early morning to later hours; providing warmth at night; preventing diseases by spraying and providing special care for fighting cocks. When the cock fighting rings were closed, socio-behavioral changes included gamblers and on-lookers going to illegal, small fighting rings. As for legal cock fighting rings owners, they adjusted their behavior by spraying disinfectant and providing disinfectant footbath for participants and on-lookers and disinfectant shallow path for vehicles; and spraying disinfectants in the ring areas. The cock fighting associations adjusted their behaviors using explicit knowledge by means of establishing a new formal group (association) and created group alliances with existing groups to increase bargaining power vis-à-vis the government. They were able to call for adjusting certain measures, which are more appropriate to fighting cocks, and collaborated with the government actor. Owners of backyard fighting cock made little economic adjustments to the measures against HPAI because raising fighting cocks is either secondary occupation or a hobby. Farm owners were unable to sell fighting cocks due to difficulties in getting fighting cock passports and had to shift the risk to buyers and to concentrate more on selling eggs. Owners of cock fighting rings did not need to adjust due to the same reason. The sellers of medicines and other accessories had to make the economic adjustments by selling the merchandise elsewhere. Those involved in the cockfighting circle and other actors can have several alternatives to better manage risk. Before setting measures, detailed studies by all major stakeholders could be taken to find the best measures both theoretically and in terms of implementation. Public relations and passing of relevant more information to all parties affected by the measures could be fully promoted. Implementation of measures could be improved or otherwise discarded / replaced e.g., inhuman way of culling, ineffective fighting cock passports. Other alternative could be an establishment of local network of outbreak surveillance, which include owners, village leaders, health volunteers, livestock volunteers; reconsidering the regulation against the use of HPAI vaccine; collecting all tacit knowledge for scientific verification; setting up data base of tacit knowledge proved effective by scientific verification; providing platform for owners of fighting to exchange experience in raising, grooming and preventing HPAI to establish a set of shared knowledge of HPAI preventing for fighting cocks that might be used as additional information in setting future measures.