Greater prairie chickens, large birds related to grouse, once maintained population size of hundreds ...

Greater prairie chickens, large birds related to grouse, once maintained population size of hundreds of thousands on the North American Great Plains.
 
  As more and more of the native grassland was converted to farms, the greater prairie chickens nearly went extinct due to a loss of habitat. Assume that a locus segregating for two alleles, A and a, each with a frequency of 0.5, existed in the greater prairie chickens before the loss of habitat. Further assume that this species was fragmented into genetically isolated populations each with a very limited number of individuals. What would one expect in terms of allele frequencies in the greater prairie chicken populations after the reduction in native grasslands?
 
  What will be an ideal response?