| epidemiologic and laboratory observations of chlamydia psittaci infection in pet birds. | psittacosis was diagnosed in 13 (24%) of 55 pet bird submissions in the first 3 months of 1983, compared with 18 (17%) of 103 in 1982, 4 (4.6%) of 87 in 1981, and 3 (8%) of 36 in 1980. the numbers and types of birds in which psittacosis was diagnosed were 2 of 47 budgerigars, 8 of 45 cockatiels , 3 of 11 small parrots ( lovebirds , conures ), 20 of 116 medium-sized parrots (african grays, amazons ), 2 of 21 macaws , and 3 of 21 cockatoos . thirty-nine percent of psittacosis-positive birds were r ... | 1984 | 6735859 |