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Re: Addendum to Trex vision as support for scavenging...
don ohmes wrote:
> Timeliness of carcass acquisition is critical to the viability of the
> mega-scavenger concept, IMO. This why olfaction is a relatively inefficient
> method of carcass detection, and in fact is why I never liked the concept of
> Trex as obligate scavenger. By the time a carcass starts to stink, it is TOO
> LATE to utilize it efficiently; the good parts have been eaten by others and
> decomposition is advancing rapidly. Also, the "nasal" scavenger is hampered
> by the geometry of air circulation (NEVER 360 degrees, unlike a visual cue),
> and the vagaries of the weather, including the 24 hour heating/cooling cycle.
> TRAILING prey can be very efficient, but pinpointing the (random) location of
> a stationary odor source from any great distance (FORGET 6 km) is very iffy,
> difficult, and time-consuming.
Hyaenas manage to find fresh kills based on scent (especially at night,
when tell-tale vultures are tucked up in bed). You don't need to smell a
rotting carcass - just the smell of fresh blood in abundance.
GIS / Archaeologist http://heretichides.soffiles.com
Melbourne, Australia http://www.geocities.com/dannsdinosaurs