Hermit crab gives rise to the popular name "hermit crab", by analogy to a hermit who lives alone. Several hermit crab species, both terrestrial and marine, have been observed forming a vacancy chain to exchange shells. When an individual crab finds a new empty shell it will leave its own shell and inspect the vacant shell for size. If the shell is found to be too large, the crab goes back to its own shell and then waits by the vacant shell for up to 8 hours. As new crabs arrive they also inspect the shell and, if it is too big,
Cinnamon-throated hermit analysis by Hinkelmann where it merely is considered the male plumage of "P. nattereri". But as it seems, the Maranhao hermit only occurs in the northern part of the range of "P. nattereri", and as the two have different voices they seem to warrant recognition as distinct species "P. maranhaoensis". It is pending of confirmation by molecular work. Cinnamon-throated hermit The cinnamon-throated hermit ("Phaethornis nattereri") is a species in the hummingbird family, Trochilidae. It is found in a broad dry to semi-humid belt along the southern edge of the Amazon Rainforest from far north-eastern Bolivia north-east to Maranhão in Brazil.