Papers Presented to the World's Congress On Ornithology;
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Habit is more flexible than hered- ity or than the fixing of variations through adaptation to environment. Much as we may sneer at the old systems, more of our modern taxonomy is based on habit than we might be willing to admit. We still group for instance the Owls in the Raptores, Perhaps we cannot do better ; but quite likely all that holds them there is their specialization as prey-takers — an adaptation wrought by environment upon an altogether different class of material from that, in the ...rest of the group. Their eggs, by the way, strongly hint this.
So since we now feel that so much of adaptation is the re- sult of persistent habit, and that adaptation is so large a factor in structure, we might well correlate habit along with structure, at least as a differentiating characteristic — if not an element. Every new habit should distinguish a bird ; for, allowing for the tendencies of heredity, and the probability Digitized by VjOOQ IC JAMES NE WTON BASKE TT. 95 of the habit being hurtful, it will in time influence morphologi- cal structure.
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To quickly assess the difficulty of the text, read a short excerpt:
Habit is more flexible than hered- ity or than the fixing of variations through adaptation to environment. Much as we may sneer at the old systems, more of our modern taxonomy is based on habit than we might be willing to admit. We still group for instance the Owls in the Raptores, Perhaps we cannot do better ; but quite likely all that holds them there is their specialization as prey-takers — an adaptation wrought by environment upon an altogether different class of material from that, in the ...rest of the group. Their eggs, by the way, strongly hint this.
So since we now feel that so much of adaptation is the re- sult of persistent habit, and that adaptation is so large a factor in structure, we might well correlate habit along with structure, at least as a differentiating characteristic — if not an element. Every new habit should distinguish a bird ; for, allowing for the tendencies of heredity, and the probability Digitized by VjOOQ IC JAMES NE WTON BASKE TT. 95 of the habit being hurtful, it will in time influence morphologi- cal structure.
What to read after Papers Presented to the World's Congress On Ornithology;?
You can find similar books in the "Read Also" column, or choose other free books by World's Congress On Ornithology, Chicago, 1893 to read onlineMoreLess
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