Sarcocystis was found in 105 (44 species, 25 families) of 832 (12.6%) (129 species, 43 families) avian muscle samples. Muscle sarcocysts were most prevalent (16-29%) in certain carnivorous, omnivorous or insectivorous birds. Lower prevalences (6-13%) were recorded in other carnivorous, ground-feeding omnivorous and insectivorous birds. In waterfowl, prevalence of infection was only 3.5%. Generally, sarcocysts in bird muscle were thin-walled (<0.5 μm) with small zoites. However, those in little pied cormorants (Phalacrocorax melanoleucos), hoary-headed grebes (Podiceps poliocephalus) and a pelican (Pelecanus conspicillatus) examined in Victoria had thicker (0.5-1 μm) walls.

Three of 53 (5.7%) muscle samples from reptiles (14 species, four families) had Sarcocystis. Greatest prevalence was found in goannas (Varanus spp.) where two of three specimens were positive.

Ninety samples from nine amphibian species (two families) and seven from five species of fish (five families) were negative for muscle sarcocysts.

Sporocysts and oocysts of Sarcocystis or Frenkelia were found in intestinal scrapings from eight of 18 (44.4%) barn owls (Tyto spp.), two of five (40.0%) spotted owls (Ninox novaeseelandiae), and two of seven (28.6%) brown falcons (Falco berigora). Mucosal scrapings from five of 12 (41.7%) elapid snakes (one Austrelaps superba and four Notechis ater) were positive for sporocysts and oocysts.

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