"Also, consider what business a harnessed, loaded bullock team would be doing on Bullock Track? We can't imagine a compelling reason for a bullock team to travel to or from the top of Bullock Track.
"The road has never provided shorter travel to or from the city. Your contention that it was used for travel from the city to the west doesn't really stack up. Not since Great North Rd existed; or Tuarangi Rd before the Chinaman's Hill deviation was constructed.
"Further, Bullock Track faces south (it gets little drying sun) and is reputedly built upon a geological area with a rising aquifer and a lot of springs (Western Springs).
"On the other hand, there is one possible explanation for the road name. That lies with the fact that there is reported to have been an abattoir on Old Mill Rd. Its position is illustrated on a brass map mounted on a traffic island at the Garnet Rd/Old Mill Rd junction. It points to a site about where the now unused Old Mill Rd high-level entrance to the zoo is, near where the zoo trams terminated.
"It's just possible that prime animals from extensive farms at Point Chevalier, Waterview, Avondale and Mt Albert, being driven - as individuals in a mob - to the abattoir, may well have turned west and climbed the steep slope - now the Bullock Track - to access Old Mill Rd and that abattoir. For individual animals (not harnessed) this would have represented a considerable saving in distance and time - compared with taking on Chinaman's Hill to the Grey Lynn junction."
"And Linda Stopforth, formerly a taxi driver, says that it was common knowledge that the Bullock Track was widely known as Zena Rd. This is supported by an entry in Wises' Greater Auckland Kwik-find Street Index."