Here's what rhymes with ornithologists.

Consider these alternatives

ornithological / teleological geologists / sociologists statisticians / conditions paleontologists / sociologists genealogists / sociologists ornithology / quality musicologists / sociologists ecologists / sociologists veterinarians / variance technologists / sociologists paleontology / quality philologists / syphilologists palaeontologists / sociologists antiquarian / agrarian cfu / who experimenters / members dietetic / magnetic