Table 1.

The difference in the energetic cost of flight (in W) compared to the pre-manipulated flight cost in each individual

Cost of flight (difference from pre-manipulated value) (W)
Bird ID0.5 cm trimmed (one wing)N1.0 cm trimmed (one wing)N0.25 cm removed (both wings)N
Black 1 -0.56 -0.48   
D Green 1 0.26 0.83   
D Green 4 0.01 0.51   
L Green 4 0.24 0.07   
Pink 141 [4.15* *   
Purple 31 -0.46 0.16   
Purple 32 -0.16  *   
Purple 37 0.88  *   
Purple 50 0.17 -0.41   
Purple 65 -0.01  *   
Average 0.04±0.1  0.12±0.2    
Black 5     0.13 
D Green 3     0.52 
L Blue 2     0.55 
L Green 5     0.96 
L Green 7     0.21 
Pink 172     0.67 
Purple 80     0.12 
Average     0.45±0.1  
Cost of flight (difference from pre-manipulated value) (W)
Bird ID0.5 cm trimmed (one wing)N1.0 cm trimmed (one wing)N0.25 cm removed (both wings)N
Black 1 -0.56 -0.48   
D Green 1 0.26 0.83   
D Green 4 0.01 0.51   
L Green 4 0.24 0.07   
Pink 141 [4.15* *   
Purple 31 -0.46 0.16   
Purple 32 -0.16  *   
Purple 37 0.88  *   
Purple 50 0.17 -0.41   
Purple 65 -0.01  *   
Average 0.04±0.1  0.12±0.2    
Black 5     0.13 
D Green 3     0.52 
L Blue 2     0.55 
L Green 5     0.96 
L Green 7     0.21 
Pink 172     0.67 
Purple 80     0.12 
Average     0.45±0.1  

After 0.5 cm has been trimmed from the right wing, one bird (pink 141),failed to maintain normal flight patterns and subsequently increased its flight cost by 3× that of its normal pre-manipulated flight. The data from this bird was removed from the calculations (asterisk).

Close Modal

or Create an Account

Close Modal
Close Modal