The sentences that contain pronoun shifts are:
- "The baker was disappointed when they burned the muffin batch."
- "The bird landed on the feeder when it saw the food."
In the first sentence, there is a shift from the singular "the baker" to the plural pronoun "they." In the second sentence, while "it" refers to "the bird," there is no true shift, as "it" remains consistent with the singular noun "bird." However, "they" in the first sentence does not align with "baker." If the task is solely to identify shifts rather than to only choose two examples, only the first sentence fits the criteria for a pronoun shift.