| → Hornbills of Africa and India have the same extraordinary instinct of plastering up and imprisoning 1861 1866 1869 1872 |
| male wrens (Troglodytes) of North America, build "cock-nests," to roost in, like 1859 1860 |
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| → in a hole in a tree, with only a small hole left in the plaster through which the males feed them and their young when hatched: how it is that the male wrens (Troglodytes) of North America, build "cock-nests," to roost in, like the males of our distinct 1861 |
| of our distinct 1859 1860 |
| in a hole in a tree, with only a small hole left in the plaster through which the males feed them and their young when hatched: how it is that the male wrens (Troglodytes) of North America build "cock-nests," to roost in, like the males of our 1866 |
| in a hole in a tree, with only a small hole left in the plaster through which the males feed them and the young when hatched: how it is that the male wrens (Troglodytes) of North America build "cock-nests," to roost in, like the males of our 1869 |
| in a hole in a tree, with only a small hole left in the plaster through which the males feed them and their young when hatched; how it is that the male wrens (Troglodytes) of North America build "cock-nests," to roost in, like the males of our 1872 |
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peculiar manner as does our British
how it is that the
→Hornbills of Africa and India have the same extraordinary instinct of plastering up and imprisoning
the
→in a hole in a tree, with only a small hole left in the plaster through which the males feed them and their young when hatched: how it is that the male wrens (Troglodytes) of North America, build "cock-nests," to roost in, like the males of our distinct
Kitty-wrens,— a habit wholly unlike that of any other known bird. Finally, it may not be a logical deduction, but to my imagination it is far more satisfactory to look at such instincts as the young cuckoo ejecting its foster-brothers,— ants making slaves,— the larvæ of ichneumonidæ feeding within the live bodies of caterpillars,— not as specially endowed or created instincts, but as small consequences of one general
leading to the advancement of all organic
namely, multiply, vary, let the strongest live and the weakest die.
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