Experimental evidence for heterospecific alarm signal recognition via associative learning in wild capuchin monkeys.

Although the sample size for each year was small, the number of years since the training period was not a significant predictor of the strength of response, but there was a weak trend towards a decrease in strength of response to playbacks conducted two or more years after the training period versus those conducted earlier (Fig. 4 , Table 5 ).

also in 1,404 other papers