The narration assumes a degree of familiarity with talking animals, and doesn't go very far into the details of what they're like in general, but it does give an overview for readers who live in areas without one species or another. Corvids are the most common family of species to live with Crafters, and the most likely to habitually involve themselves in Crafter affairs, for example by matchmaking or telling them things about their neighbors. Parrots tend to be more oriented toward their flocks; there are plenty of individual exceptions in areas where they live, but any given parrot isn't as likely to care about the Crafters near them, and they're also sillier and less trustworthy with a tendency toward playing pranks, which makes them much less popular among Crafters. Elephantiforms vary by gender; the females live in small herds that tend to have only transactional or tradition-based relationships with Crafters, while males prefer to avoid others of their species but join Crafter communities fairly frequently and tend to form individual friendships with Crafters much more often than corvids or parrots do. Cetaceans vary quite widely in how they interact with Crafters, and tend to be too standoffish or too unpredictable to take a consistent role in Crafter society.
There are plenty of exceptions to and variations on the themes, though, and that's what most of the book is about: situations where by some quirk of history or geography the corvids live more closely with Crafters, or ignore them almost entirely in favor of focusing on their own foraging and flocks, or Crafters take a more central role in helping a parrot flock, or elephantiform herds have settled in an area where they're dependent on Crafters for food, or dolphins or orcas have established a tradition of working with Crafters to hunt a seasonal bounty of fish more effectively than either species could alone, or where one of the less common talking species has established a relationship with their local Crafters, like the island where rats take on a role similar to crows in the rest of the world or the rare cases of Crafters tolerating the presence of apes well enough to visit and trade with them.
It also discusses the different approaches to some of the moral issues that come up with talking animals; crows in particular tend to like the idea of having genecrafted or fleshcrafted hatchlings, and in addition to all the issues that come up when a Crafter wants something like that done to their offspring, there's the issue of their less clear understanding of the risks of it, which are usually reduced but not completely mitigated by Crafters' willingness to help any creature they come across who needs it. Similarly it's not clear which of several common approaches is best when faced with a lost or orphaned or runaway baby elephant; they tend to turn out weird when raised by Crafters, and while there have been some clear success stories - the book spends a whole chapter covering a visit to the mammoth who's gone so far as to claim a Crafter-style territory with help from his neighbors - it's more common for them to end up neither comfortable in Crafter society nor able to interact smoothly with their conspecifics as adults.