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Re[2]: Crocodile Survival Casts Doubt on Dinosaur Big Freeze

Crocodile eggs are buried, so the hatchlings have to dig themselves out, which
makes me wonder if crocodiles have the same capability of burrowing/hibernating
for extended periods of time (during dry seasons, somewhat like frogs).  If they
do, that could have contributed to their survival during a cataclysmic 
event.  But then, how did birds survive?