Part 7

Why does each Bird build a peculiar kind of Nest?

How do young Birds learn to build their first Nest?

Do Birds sing by Instinct or by Imitation?

Man's Works mainly Imitative

How young Birds may learn to build Nests.

Birds do Alter and Improve their Nests when altered conditions require it

Conclusion

VII.--A Theory of Birds' Nests; showing the relation of certain differences of colour in female birds to their mode of nidification. Pp. 231-263

Changed Conditions and persistent Habits as influencing Nidification

Classification of Nests

Sexual differences of Colour in Birds

The Law which connects the Colours of Female Birds with the mode of Nidification

What the Facts Teach us Colour more variable than Structure or Habits, and therefore the Character which has generally been modified

Exceptional cases confirmatory of the above Explanation

Real or apparent exceptions to the Law stated at p. 240

Various modes of Protection of Animals

Females of some groups require and obtain more Protection than the Males

Conclusion

VIII.--Creation by Law. Pp. 264-301

Laws from which the Origin of Species may be deduced

Mr. Darwin's Metaphors liable to Misconception

A case of Orchis-structure explained by Natural Selection

Adaptation brought about by General Laws

Beauty in Nature

How new Forms are produced by Variation and Selection

The Objection that there are Limits to Variation

Objection to the argument from Classification

The Times on Natural Selection