1. Analysis of Breeding Success
Observed 
Nest Fate
Treatment Successful Unsuccessful Total
Excluder 6x12 13 3 16
Round 6X12 9 7 16
Total 22 10 32
Expected 
Nest Fate
Treatment Successful Unsuccessful Total
Excluder 6x12 11 5 16
6X12 11 5 16
Total 22 10 32
Chi squared 
2.32 Probability value (1degrees freedom) is >0.10 
Therefore >10% likelihood of getting this result by chance when values were not different
Difference is not statistically significant 
2. Analysis of Breeding Success
Observed 
Nest Fate
Treatment Successful Unsuccessful Total
Excluder 6x12 11 5 16
6X12 6 10 16
Total 17 15 32
Expected 
Nest Fate
Treatment Successful Unsuccessful Total
Excluder 6x12 8.5 7.5 16
6X12 8.5 7.5 16
Total 17 15 32
Chi squared 
3.12
Probability value (1degrees freedom) is <0.10 and >0.05
Therefore a 5-10% likelihood of getting this result by chance when values were not different
Difference is marginally significant statistically