Assertion: hoatzin | /r/HasProperty | close to columbiforms
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Source sentences:
text: (2003) conclusion that hoatzins are close to columbiforms is both poorly supported and unsatisfactory in that too few other neornithine taxa were included for comparative purposes; and studies linking hoatzins with turacos (Hughes & Baker 1999, Hughes 2000) are now questionable given that there is strong evidence from the β-fibrinogen gene that hoatzins are part of a metavian clade that does not include turacos (Fain & Houde 2004, Ericson et al. 2006).