How do critters survive in the concrete jungle? It takes smarts[ Sat, 9 Mar 2013 18:48:43 GMT ]Foxes, songbirds, crows — even whales — have come up with new tricks to survive in a man-made city habitat (or a human-impacted area). What about the animals that can't adapt so well? It's up to humans to adjust their behavior for the sake of the critters, say researchers.