Thirty-three pools of fecal samples of the species Amazona aestiva, Amazona amazonica, Anodorhynchus hyacinthinus, Ara auricollis, Ara canga, Ara glaucogularis, Ara macao, Ara manilapa, Ara maracana, Ara rubrogenys, Aratinga erythrogenys, Aratinga cactorum, Aratinga auerea, Aratinga mitrata, Aratinga auricapilla, Aratinga jandaia, Aratinga wagleri, Aratinga leucophthalmus, Brotogeris acuticaudata, Cynoliseus patagonus, Caracopsis vasa, Diopsittaca nobilis, Graydidascalus brachyurus, Muopsitta monachus, Nangayus nenday, Pionites melancephala, Pionites leucogaster, Pionus menstruus, Pionus chalcopteus, Pionus maxiliani, Pyrrhura perlata, Pyrrhura leucotis, and Triclharia malachitacea, kept in separate enclosures, were analyzed using Enzyme-linked Immunosorbent Assay (ELISA) for detection of parasitic antigens. Quantitative Polymerase Chain Reaction (qPCR) was conducted in order to identify the species Cryptosporidium in the positive samples targeting the small subunit ribosomal RNA gene (SSU rRNA), followed by sequencing and analysis of the DNA amplicons.[...](AU)