Where does “aventurilla” come from?

aventurilla (Spanish) comes from Spanish aventura, from Vulgar Latin adventura, from Late Latin adventurus, from Latin adventus, from Latin adveniō, from Latin ad-, from Latin īn-, from Latin în — in.

aventurilla (Spanish): vermilion flycatcher (Pyrocephalus obscurus)

Definitions

vermilion flycatcher (Pyrocephalus obscurus)

Ancestry of “aventurilla”, step by step

Step	Language	Word	Meaning
1	Spanish	aventura	adventure; affair, fling
2	Vulgar Latin	adventura	—
3	Late Latin	adventurus	adventure; about to arrive; an adventure
4	Latin	adventus	arrival, approach, advent; Advent
5	Latin	adveniō	to come to, to arrive
6	Latin	ad-	to; usually prefixed to verbs, in which cases it...
7	Latin	īn-	un-, non-, not
8	Latin	în	in, at, on, upon, from (space)
9	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
10	Proto-Italic	en	in
11	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Latin ad- →