Deathgleaner

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The Deathgleaner is a postulated mammal created for the television series The Future is Wild. The deathgleaner is a giant predatory bat that inhabits the North American cold desert 5 million years from now. Due to the freezing temperatures of the desert night, the deathgleaner is a diurnal hunting bat. The deathgleaner hunts spinks and young desert rattlebacks, plus it eats carrion. The deathgleaner has a wingspan of over 4 feet across, rendering it to solve the same problems of the pterosaurs of the past. Its wings are fragile membranes and they lose heat easily. The deathgleaners solved the problem of heat loss by evolving a mechanism that cools the blood before it reaches its wings. Flocks of deathgleaners follow rattlebacks. When a desert rattleback uncovers tubers for food, it also uncovers spinks. The deathgleaners then attack the spinks. To promote survival, the deathgleaners share their food with roostmates.