Specialists maintained their preference for the target cue;Foraging initiation by naïve sparrows was slower than by specialists only in the first session;Naïve individuals experienced higher success using the alternative cue;The calculation of the observed-to-expected ratio from Competitive advantage of rare behaviours induces adaptive diversity rather than social conformity in skill learning

Naama Aljadeff, Luc-Alain Giraldeau, Arnon Lotem
2020 Figshare  
The distribution (probability density plot) of specialist preference for colour over shape (the number of choices in the rewarding colour / total number of choices in rewarding colour and shape) during the four sessions of Stage 2 experiment. We used exact binomial tests to reject the null hypothesis of no preference (i.e. that the proportion of choices in the rewarding colour equals 0.5). All distributions significantly differed from those expected by our null hypothesis: (a) colour specialist
more » ... ) colour specialist groups; significant preference for the rewarding colour (one-tailed p< 0.02 in all cases, n=13,16,16,15), (b) mixed specialist groups; significantly different than 0.5, with individuals preferring either colour or shape (two-tailed p< 0.001 in all cases, n=22,21,22,21), and (c) shape specialist groups; significant preference for the rewarding shape (one-tailed p<0.001 in all cases, n=16,16,17,17).;Latency to first peck in intact wells by specialists (grey boxplots) and naïve sparrows (white boxplots) during the four sessions of Stage 2 experiment (session 1: n=70, 10, session 2: n=72, 16, session 3: n=69, 14, session 4: n=69, 17, for specialists and naive, respectively. We included only naïve sparrows that made six or more choices per session and whose data was thus further analysed). Naïve sparrows were slower to start pecking in intact wells, compared to the specialists, only in the first session (Mann-Whitney test, p=0.008). In the following sessions foraging initiation did not differ between specialists and naïve individuals. Data are represented as median, 25%, and 75% quantiles, and data points outside this range.;The estimated proportion of successful pecks in the rewarding colour wells (white boxplots) and the rewarding shape wells (grey boxplots) by naïve individuals (top panel a-c) and by specialists (bottom panel d-f) in the 3 group types (colour specialists, mixed specialists, and shape specialists) and during the four foraging sessions of Stage 2 experiment. The proportion of successful pecks was esti [...]
doi:10.6084/m9.figshare.12740665.v1 fatcat:fsvrwfuebfbmtin25pyeozyoam