Here is the original research article documenting
homing instinct in Crocodylus porosus:
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0000949
The authors note that evidence for homing behavior over shorter distances appears to exist for alligators and caimans, which suggests this capacity may be a general crocodilian characteristic, and not restricted to estuarine species.
Dann Pigdon GIS / Archaeologist geo cities.com/dannsdinosaurs Melbourne, Australia heretichides.soffiles.com ___________________________________________________________________