The Origin of Species · Chapter
Special Instincts explained
Darwin explores how instincts in nature are modified by natural selection, focusing on three remarkable cases: the cuckoo's egg-laying habit, the slave-making instinct of ants, and the cell-building instinct of hive-bees.
What happens
Darwin explores how instincts in nature are modified by natural selection, focusing on three remarkable cases: the cuckoo's egg-laying habit, the slave-making instinct of ants, and the cell-building instinct of hive-bees.
Free preview opens on this chapter — companions, themes, and character notes appear beside the text.
Narrative arc
Story tension across the book — this chapter sits in Rising action.
- Setup
- Escalation
- Breaking point
- Aftermath
- Closing
This passage marks the story's dramatic climax because Darwin shifts from a defensive posture against objectio…
Full beat labels and climax notes unlock in the reader.
Follow the arc while readingThemes in this chapter
- Natural Selection and the Struggle for Existence
Instincts are modified by natural selection, as shown in cuckoo, ant, and bee behaviors.
- Adaptation and the Utilitarian Doctrine
Each instinct serves a functional purpose for the species' survival and reproduction.
Characters to notice
- Charles Darwin
Author and narrator, analyzing instincts through natural selection.
- Pierre Huber
Naturalist who studied the slave-making instinct of ants.
Key passages
“We shall, perhaps, best understand how instincts in a state of nature have become modified by selection by considering a few cases.”
We can best grasp how natural selection modifies wild instincts by examining specific examples.
Darwin introduces the method of studying instinct through case studies.
“I will select only three, namely, the instinct which leads the cuckoo to lay her eggs in other birds’ nests; the slave-making instinct of certain ants; and the cell-making power of the hive-bee”
I will focus on just three: the cuckoo's egg-laying in other birds' nests, the slave-making behavior of some ants, and the honeycomb-building ability of bees.
Darwin outlines the three key instinct examples to be analyzed.
