This is an interior shot of the Scripps Aviary showing foliage and paths, with people walking on the paths. Since there were no walkways inside the aviary until 1958, this photograph has to have been taken after this change. In 1991 the cage was remodeled again, and in 2020 is described as a "lush African rainforest" by the San Diego Zoo Website. The funds to build the initial flight cage were given by Ellen Browning Scripps. Printing on the address side of the postcard identifies it as one of a "Color Series from the San Diego Zoo," the "Tropical rainforest. The aviary is described as the "largest walk through bird cage in the United States," "170 feet long, 90 feet high," with "an average width of 80 feet," exhibiting "350 tropical birds of 100 different species." The San Diego Zoo is located in Balboa Park.
