Boyd’s Bible Dictionary:
An unclean bird, thought to be the beautiful migratory hoopoe
(Lev. 11:19).
Concise Bible Dictionary:
Hoopoe
This is generally supposed to refer to the Hoopoe, which rendering the RV has adopted. It is judged to be the Upupa epops. It feeds upon all sorts of insects, and its nest has a very unpleasant smell, either of which facts would be a sufficient reason for its being classed among the unclean birds (Lev. 11:19; Deut. 14:18). It has a conspicuous crest on its head, which it seems proud of displaying.
Strong’s Dictionary of Hebrew Words:
Transliteration:
duwkiyphath
Meaning:
of uncertain derivation; the hoopoe or else the grouse