Which genera, besides *Grus*, were historically suggested for the placement of the Whooping Crane based on older classifications?
Answer
*Bugeranus* or *Leucogeranus*
While modern molecular evidence strongly supports maintaining the Whooping Crane within the genus *Grus*, taxonomic science involves periods of flux and debate, especially as new analytical methods emerge. Historically, different classification systems, based on variations in morphology or breeding biology observed at the time, suggested alternative placements for *Grus americana*. Specifically, some earlier authorities considered placing the Whooping Crane in the genera *Bugeranus* or *Leucogeranus*. Current scientific consensus, however, generally favors the established placement within *Grus*, recognizing its closest relatives among the larger, paler crane species.

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