Swiftlets are unusual birds in that they use echolocation to help navigate in the caves in which they nest. Q: What does the cladogram show about the evolution of echolocation? * please give a good DETAILED answer * Figure 3. Echolocation reconstructed onto the maximum likelihood phylogeny of the swiftlets. The presence or absence of echolocation in taxa other than Aerodramus papuensis and Hydrochous gigas are taken from Price et al. (2004). .

1. Swiftlets are unusual birds in that they use echolocation to help navigate in the caves in which
they nest.
Q: What does the cladogram show about the evolution of echolocation?
* please give a good DETAILED answer *
Figure 3. Echolocation reconstructed onto the maximum likelihood phylogeny of the swiftlets.
The presence or absence of echolocation in taxa other than Aerodramus papuensis and
Hydrochous gigas are taken from Price et al. (2004).