1) Shade of yellow 
Icterine n is a colour, described as yellowish, jaundice-yellow or marked with yellow. It is derived from Ancient Greek ikteros (jaundice), via the Latin ictericus. It is used as an adjective in the names of birds with yellowish plumage to describe their appearance, including the Icterine Warbler and Icterine Greenbul. ...
of, like or pertaining to orioles and related birdsyellowish or marked with yellow
icterine A reference to or related to blackbirds, bobolinks, meadowlarks, and orioles.