Final answer:
The dialogues in question symbolize themes of freedom and individual autonomy using the metaphor of birds. They reflect societal norms, gender roles, and the constraint of the spirit through the imagery of caging and silencing a bird.
Step-by-step explanation:
The dialogues presented are distinctive of characters grappling with heavy themes such as freedom, voice (or lack thereof), and autonomy, which frequently manifest in the symbolism of birds. Within the extracts, 'Horton: No, I just never thought I would see you on a nest?' reflects an observation that suggests surprise and challenges the expected behavior or status of another character, which is a recurring motif in literature. This reference to 'a nest' might figuratively suggest settling down, domesticity, or assuming a role that is usually not associated with the character being addressed.
The broader context of these dialogues evokes an analysis of societal norms and expectations, particularly concerning gender roles and the constraints placed on individuals, often represented by the imagery of caged or free birds. For example, the killing of the bird symbolizes the stifling of the spirit or the silencing of a song, which can be a metaphor for the suppression of one's self or desires. Interwoven throughout these narratives is the implication that the characters face a loss of identity or a crucial element of their existence, akin to a bird losing its purpose should it be confined or its song suppressed.