Answer:
The best estimate for the bird population is 613 birds
Step-by-step explanation:
Let x be the total of number of estimated bird
From x, 40 birds are with belt
he observed 520 birds, 34 of which had belts.
Then taking reciprocal of both statements
x/40 = 520/34
34x = 520*40 = 20800
x = 20800/34
x = 613The total of number of estimated birds is 613 birds
The total of number of estimated birds is 613 birds