MWC AREA and WING WEIGHT 



The equation of the line is 

 2570M = A'"' 



Birds 



these on butterflies 



o light wing 

 a tar wing beat rate 



* a lone hummingbird 



%J^o 



The largest birds above the line 

 Vultures, Albatross, etc., are 

 soaring birds and flop their 

 wings very little. Hence the wing 

 is light for a given area 



_l_ 

 10 



Wing Weight - milligrams 



I 



10' 

 Fig. 9 



10' 



10* 



10' 



10' 



