from the above-linked ebird.org:

Anis are bizarre, coal-black cuckoos with long floppy tails and unique, curiously tall, flattened bills. Groove-billed occurs in a variety of open and semi-open habitats in tropical lowlands and foothills, typically staying low in shrubs and grasses. Gregarious and not particularly graceful; usually seen crashing around awkwardly in small groups.

oh my god

groove billed anis are a hilarious cuckoo situation where they ended up laying their eggs in one another’s nests instead of anyone else’s. they hang out together in groups of up to five pairs until a nest gets built (sometimes by committee, sometimes they just hang around hopefully until someone does it all on their own) then they start sneaking over and laying an egg in at a time. the females who lay for the first time will sometimes flip prior eggs out of the nest like ‘oh i KNOW this one isn’t mine! away it goes’ but eventually everyone’s laid a couple eggs in there and is stuck with the mutual hostage situation. then they take turns incubating until all the kids hatch and everyone pitches in on feeding them, because no one knows which of the kids are theirs so they all might as well.

they also like to do a team handshake where they clump up and mutually make a low bubbling noise together, to signal group affiliation. go team!