The second image shows the lovely tropical birds and flamingos which were one of the main draws.
Final image shows a close up of the birds. I can relate to the kid being both fascinated and scared about the birds.
In the mid 1970s more rides and attractions were added. Busch Gardens closed as a theme park in 1977, re-opening as a bird sanctuary and was closed in 1979 a victim of expansion of the brewery. The birds were sent to the LA Zoo and Busch Gardens in Florida and Virginia. Today one can see some of the monorail tracks at the brewery but nothing else of this once verdant and tropical garden theme park.