Non-parasitic (non-infectious) diseases are caused by unfavorable growing conditions or other nonparasitic factors such as.    From Wordnik.com.  [Chapter 10] Reference

Until recently the instincts of the European and of the nonparasitic American cuckoo alone were known. now, owing to Mr. Ramsay’s observations, we have learnt something about three Australian species, which lay their eggs in other birds’ nests.    From Wordnik.com.  [VIII. Instinct. Special Instincts] Reference