Start with high-confidence ecuador & galapagos travel books, then narrow by subgenre or adjacent topics.
The Ecuador Reader
Carlos de la Torre, Steve Striffler
Birds of Ecuador and the Galápagos Islands
Juan Freile, Murray Cooper
Ecuador and the Galapogos Islands (traveller's Wildlife Guides)
David L Pearson
Galapagos Wildlife
David Horwell, Pete Oxford
Ecuador - Culture Smart!
Russell Maddicks
Galapagos
Pierre Constant
