While hiding from the crows in a display tent, Garrett zips the tent opening close about 3/4 of the way. In the next shot, the tent is zipped completely closed.
When Dina catches the crow in a shopping bag, the bundle that she holds is too small to contain the crow inside of it. When Mateo takes the bag and smashes it on the ground, the bag is visibly larger, large enough to have had the crow inside.
Tate rings up Glenn for all of the morning after pills in stock, shown to be 16 boxes. Tate states that they are $40 apiece. That would be $640 (plus tax, which in St. Louis, where the show is set, is 9.679%, making each box $43.87, for a grand total of $701.95). Yet the bill comes to $1127.54, which is not only much higher than it should be, but is not divisible by the cost of a single unit ($1127.54 total divided by a per-unit cost of $43.87 would be about 25.7 units).
A box of wine weighs several pounds, yet Amy picks one up as though it is virtually weightless. The box is clearly an empty prop.
Amy is pooped on by a bird and some of it gets in her hair. Minutes later, her hair is not only completely clean, but even more professionally styled than before she was pooped on.
When Amy finishes picking out frozen pizzas, the door to the freezer cabinet doesn't shut completely when she and Jonah walk away from it.
Amy is shown shopping for frozen pizzas early in her shift. The pizzas would be thawed well before she could take them home.
When Amy says she'd planned to stay home all weekend watching Freddie Prinze, Jr., one of the protesters states that he thought he was dead, prompting a worried Amy to assert that she's 70% sure he's still alive. If she's planning on watching old movies, it would make no difference whether the actors are still alive or not.