Another form meaning relating to or characteristic of wading birds; adapted for walking on long legs through water.
From Latin 'grallator' + '-ory' (adjective suffix). This is a variant of grallatorial, showing how English naturalists used different Latinate endings to describe the same zoological concept.
The existence of both 'grallatorial' and 'grallatory' shows how English scientists sometimes created multiple Latin-derived terms for the same concept—there was no central authority standardizing zoological vocabulary.
Complete word intelligence in one call. Free tier — 50 lookups/day.