Olfactory lures in predator control do not increase predation risk to birds in areas of conservation concern

Abstract Context Lethal control of predators is often undertaken to protect species conservation concern. Traps are frequently baited increase capture efficacy, but traps can potentially predation risk by attracting protected areas. This especially important if targeted escape due low trap success. Snake using live mouse lures may be beneficial effectively remove snakes in the presence birds and do not attract additional area. Aims The present study evaluated whether mouse-lure areas occupied (simulated deploying bird-lure traps) could influence from an invasive snake on Guam. Methods were used, with Japanese quail (Coturnix japonica) as a proxy for risk, assess adjacent (Mus musculus) would brown treesnakes (Boiga irregularis) focal area contact between avian prey. Catch per unit effort (CPUE) at stations containing either trap, or pair (i.e. one trap) was evaluated. Key results Bird-lure paired did differ CPUE isolated traps. At stations, 2.3× higher than traps, suggesting capable drawing away experienced decay captures over time, whereas increased after 9 weeks exceeded 7 weeks. Conclusions Mouse being captured Instead, have locally suppressed snakes, without still had area, putting prey greater risk. However, caught bird tended larger better body condition, preference mammalian snakes. Implications Strategic placement olfactory within concern protecting predator.