This book has about 170 pages of birds, featuring grebes, parakeets, pigeons, rails, warblers, and woodpeckers, and only some 60 pages of other animals, all of which are mammals and there are only seven of those: thylacine, greater short-tailed bat, Caribbean monk seal, Yangtze River dolphin, quagga, Schomburgk's deer, and the Bubal hartebeest. Naturally there are no plants because the title forbids it, but I have to say I was disappointed to see no fish, amphibians or reptiles included.
While this is educational, I think a much better and broader job could have been done. It's like the author just tossed in whatever random critters he happened across and made no effort to diversify at all. What's least shocking is that all of these extinctions are because of humans: hunting, deforestation, other destruction of habitat, and so on. It's the same old selfish, short-sighted, and clueless story, and things are only getting worse with climate change, so while this book does offer some insight into how badly we're screwing our grandchildren - even our children - out of their heritage, it really could have been a lot better, and I cannot commend it as a worthy read as is.