Books > Science & Math > Nature & Ecology > Reference
Monthly median sales (top 30)
$4,127
The median book price
$13.40
Bestseller's daily sales
83
50th book's daily sales
5
Average number of pages per book
288
Monopoly/Olygopoly detected
Yes
Performance tracking
Matching KDP categories
nonfiction > science > reference
51.64%
nonfiction > nature > reference
51.64%
nonfiction > nature > ecology
51.64%
nonfiction > mathematics > reference
51.64%
Keyword requirement
biology, biologist
Best selling keywords
Median title & subtitle length is 11 words:
- North American Bird Watching for Beginners: Field Notes on 150 Species to Start Your Birding Adventures
- Edible Wild Plants: A North American Field Guide to Over 200 Natural Foods
- Peterson Field Guide To Birds Of Eastern & Central North America, Seventh Ed. (Peterson Field Guides)
- National Geographic Field Guide to the Birds of North America, 7th Edition
- The Sibley Field Guide to Birds of Eastern North America: Second Edition (Sibley Guides)
- Indie success
-
- Volatility
- New releases
- KDP Select