The answer would probably be a type of tree, because Mallard is a type of duck. So for example Mallard : duck is the same as Oak : tree
The significance of the conversation between Sierra and her friends about how their neighborhood is changing is the foreshadowing of the shapeshifters.
<h3>What is Foreshadowing?</h3>
This refers to the literary technique that is used to show the prediction or hint about future events in a story.
Hence, we can see that although your question is incomplete, I can infer that you refer to the book <em>Shapeshifter</em> and the foreshadowing used shows the mayhem that is about to befall the neighborhood when dark shapes begin to move as they are possessed by spirits.
Read more about foreshadowing here:
brainly.com/question/96170
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The format, structure and timeline of the story
