zone of hybridization in a sentence

1. A zone of hybridization between the oncilla and the colocolo has been found through genetic analyses of specimens from central Brazil.
2. The spotted pardalote has three subspecies, one of which the yellow-rumped pardalote is sometimes treated as a separate species due to its distinctive plumage and call and lack of zone of hybridization in southwestern Australia.
3. The most common species, the varied sittella, was once thought to represent several separate species, including five species in Australia, but in spite of considerable variation in plumage there are extensive zones of hybridization where the forms overlap ( including an area of Queensland where all five Australian subspecies exist ), and are now thought to be a single species with eleven subspecies.
4. It's difficult to find zone of hybridization in a sentence.