Fiddler crab two weeks. Fiddler crabs such as "Uca mjoebergi" have been shown to bluff about their fighting ability. Upon regrowing a lost claw, a crab will occasionally regrow a weaker claw that nevertheless intimidates crabs with smaller but stronger claws. This is an example of dishonest signalling. The dual functionality of the major claw of fiddler crabs has presented an evolutionary conundrum in that the claw mechanics best suited for fighting do not match up with the mechanics best suited for a waving display. The internal classification of the genus "Uca" is unstable, but it contains around 100 species arranged among
Long-billed hermit Long-billed hermit The long-billed hermit ("Phaethornis longirostris") is a large hummingbird that is a resident breeder from central Mexico south to northwestern Colombia, extreme western Venezuela and western Ecuador. This species was formerly known as the western long-tailed hermit or just long-tailed hermit, but was renamed to highlight its unusual bill. The taxonomy of this group is complicated, with similar hermit populations from both sides of the Andes being originally named as one species, the long-tailed hermit, "P. superciliosus". The latter name in now reserved for the species east of the cordillera. There is potential separation of the paler, greyer,