While almost all the humans in this movie (including the antagonist - the head chef of The Ciguapi) are non-verbal, only one female has a singing part: Mon Laferte performs "Survivor" in the Salsa Tuesday dance sequence.
While the mallard family is following Chump through the city, they pass a bunch of balloons. One of the balloons is the unicorn from the Despicable Me movies.
The tractor at the duck farm has Lux written on the side, which is a measurement of Illumination, the name of the animation studio.
Keegan-Michael Key's 4th time voicing a bird, after The Angry Birds Movie (2016), The Star (2017), and Toy Story 4 (2019).