Looks like at least one is a hybrid mallard/Hawaiian duck.
I saw several 'junglefowl' in different spots in Hawaii, but was never quite sure when they were just somebody's chickens.
Chasing around a member of its own species, or something different?
Being chased by a member of its own species, or something different?
The fourth and fifth photos are of a different (farther away) individual, but still a wandering tattler I believe.
A pair of plovers with a wandering tattler in the middle.
This was cool. It looks like folks were draining/lowering the pond to harvest farmed fish or shrimp (see pic of guys in water), and the night herons were taking advantage of the concentration/vulnerability of their prey. Never seen so many in one spot before. A photo of a flying heron appears to be holding a large shrimp.
A single gull seen dive-bombing the fish/shrimp ponds.
Unsure about ID. eBird shows only laughing gulls at site so that's probably the safe choice, but the wingtips don't look right to me for a laughing. To me, the wingtips look most like a Franklin's gull, but that species isn't on the USGS checklist for Hawaiian birds. (Although Bishop Museum has it as an occasional migrant) Another option for dark-headed gulls Hawaii is Bonaparte's & Black-headed. Bishop Museum's bird list is more expansive than USGS's. Their photos of wintering laughing gulls don't show any with a breeding colored mantle. Second opinions?
These are eggs that I saw in multiple freshwater ponds and swamps. Looks like these are laid by an apple snail. Pomacea canaliculata? An invasive species. Read more here.