TRAVELS OF WATERFOWL 



of all reality. What we have to understand is that time is an accumulation, 

 a growth, a duration" (Durant, 1952:451). Time is relative to motion and 

 to space; hence time is also relative to structure. Time for the flightless 

 duckling, with its short wings and rapid metabolism, is not the same as 

 for the mother with her rapid flight and slower rhythm of body processes. 

 By the clock, to be sure, and by the calendar, time is the same for all — for 

 the duckling, for its mother, and for the observing man. But unquantified, 

 apprehended in life and space and motion, time for the duckling, its mother, 

 and man is very different; each lives in a temporal world of its own. 



Space is the medium within which animals live and move. It not only 

 bounds the places and objects of the present, but is the whole of the world 

 in which the bird has lived its past, experiences its present, and will live its 

 future. Space is relative to the perception and the motion of each organism. 

 Time and space are thus inseparable in the life equation. Just as time is rela- 

 tive to structure, so is space. Space for the duckling is far more restricted 

 than for the mother in terms of square feet or miles; yet measured rela- 

 tively, the world in which the duckling lives is as great and as wide as that 

 of the mature bird. 



We must ever remember that just as time and space are not the same 

 for the adult and baby duck, so they are not like entities for man and bird. 



