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Table 3.

Results of experiment 3 for quail and starlings

Mean % choices correct±S.E.M.
Experiment 3QuailStarlings
Last 10 training trials 86.0±2.5 83.8±2.4 
Probe 1 82.3±4.0 87.5±5.4 
Novel stimuli, no food reward t=1.22, d.f.=3, P=0.309 t=0.73, d.f.=3, P=0.517 
Probe 2 40.7±5.2 52.1±5.2 
Novel stimuli, UV—conditions t=10.85, d.f.=3, P=0.002 t=3.29, d.f.=3, P=0.046 
Probe 3 81.3±5.4 87.5±2.4 
Selects appropriate wavelength regardless of intensity t=1.10, d.f.=3, P=0.350 t=1.00, d.f.=3, P=0.391 
Mean % choices correct±S.E.M.
Experiment 3QuailStarlings
Last 10 training trials 86.0±2.5 83.8±2.4 
Probe 1 82.3±4.0 87.5±5.4 
Novel stimuli, no food reward t=1.22, d.f.=3, P=0.309 t=0.73, d.f.=3, P=0.517 
Probe 2 40.7±5.2 52.1±5.2 
Novel stimuli, UV—conditions t=10.85, d.f.=3, P=0.002 t=3.29, d.f.=3, P=0.046 
Probe 3 81.3±5.4 87.5±2.4 
Selects appropriate wavelength regardless of intensity t=1.10, d.f.=3, P=0.350 t=1.00, d.f.=3, P=0.391 

Both species are still over 80% correct during their last 10 training trails and when novel stimuli were used without reward (probe trial 1). Again,performance drops significantly and to random levels when UV is removed from the ambient light (probe trial 2). Finally, the performance of the birds on the task was resistant to large variations in intensity, with birds correctly selecting patterns of the appropriate wavelengths (probe trial 3).

Statistics show one sample t-test on difference in performance between the last 10 training trials and probe trials.

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