Just the main site.Which sites on eBird are you looking at?
https://ebird.org/species/nehhon1#:~:text=A distinctive honeyeater, mostly dark,often down to sea level
There isn't much information on eBird overall. Obviously the records might not be from Port Villa but they are at least from relatively close by. After doing a bit more research I was significantly further outside Port Villa than I initially thought, but if the birds are exclusives to montane rainforests as suggested then it would be unlikely that the birds I saw were Vanuatu Honeyeaters.
I was however only a short drive from a relatively large patch of "hilly" rainforest, and I saw a pair of fruit doves (I wasn't able to identify the exact species) in a tree in a neighboring property, so I'm not really sure. The reason I was so confident was that as far as I can see there isn't any other bird that really looks like that present on the island, although of course I could be wrong.
Does anyone have any opinions?