This episode features the last speaking appearance of Troy McClure, due to the fact that Phil Hartman, voice actor of Troy McClure and Lionel Hutz, was murdered on May 28, 1998. This episode was also dedicated to Hartman. The pair make cameos and are used as background characters after this.
The “Bolivian tree lizard” is a fictional species. However, its behavior mirrors the habits of birds which are brood parasitic, such as the cuckoo and cowbirds. Its impact on birds may also be a reference to the brown tree snake and its impact on Guam's native birds.
This episode was actually a B-story that had been unused for a long time due to having no place in the plot. The original story, however, focused on Homer finding a bird's nest in one of the nuclear plant towers and trying to find a home for the birds before the winter comes.
The only other episodes to originally carry a television rating of G are the season eight episode with Shari Bobbins, the season nine episode "Miracle on Evergreen Terrace", and the season nine clip show episode "All Singing, All Dancing" (despite that the latter episode features a sequence with Snake Jailbird holding the family hostage). However, "Bart the Mother" and "Simpsoncalifragilisticexpiala(Annoyed Grunt)cious" were upgraded to TV-PG ratings after their original airing.
A weapon is a prize at an arcade for children. Supposedly, weapons have to have permits issued in order to posess them.
"The Good Son" is referenced in the scene with Nelson and Bart shooting the birds. The red scarf Nelson is wearing resembles the very scarf Henry Evans (Macaulay Culkin) is wearing in the movie.
Nelson was humming the theme song of The Simpsons as he was cooking a carrot.
Technically speaking, the snakes and gorillas wouldn't have been necessary. Since the ones that Bart hatched were related, the rest of the lizards were inbred. As a result, they wouldn't have lasted very long. Therefore they are never seen again for the rest of the series.
The go-karts are first shown going counterclockwise, but in the next cut with Bart and Homer, they are shown going counter-clockwise.
Homer should know who Nelson is, especially because Homer had Nelson as quarterback in his peewee football team in Bart Star.