Su suggerimento di @Ospizio.

 

Un ornitologo che, pur di salvare le gru, ha eseguito in prima persona la fecondazione di una gru femmina con tutto il rito che ciò comporta.

So ornithologist George Archibald stepped in. That is, the Cornell Ph.D. graduate decided he would have to woo the whooping crane. Archibald’s logic was simple. If Tex fell for him—or, in his words, “formed a pair bond”—it would trigger ovulation, and then his colleagues could artificially inseminate her.

 

Immagine “Whooping Crane in flight in Texas” by U.S. Department of Agriculture – Flickr: 20110214-USDA-JN-0001. Licensed under Public Domain via Commons