DDeden Wrote:
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> Lee Olsen Wrote:
> --------------------------------------------------
> -----
> > DDeden Wrote:
> >
> --------------------------------------------------
>
> > -----
> >
> > >
> > > Cost:Benefit ratio shows birds were
> very
> > > profitable.
> > > lots of modern birds run.
> >
> > So how fast does the average percher run?
>
> Average percher? I don't know that term.

I didn't either until I looked at what is classified as a percher.

> I'm
> referring to dino-birds with long boney fleshy
> tails who I surmise perched compressionally on
> branches (perhaps boulders also),

> not modern birds
> who perch tensionally on branches. Not sure if you
> are able to grasp the difference, as you keep
> confusing the two.

I posted a link to a reconstruction of an Early Cretaceous bird sitting in a tree that looks more like a perching bird than a lineman looks like Zs. I honestly don't think I'm the one that is confused.


> By the way, I just watched a sparrow try to eat a
> flattened dehydrated earthworm, couldn't do it but
> sure tried hard. Too bad it hasn't any teeth or
> "slashing claws",
>or maybe a stone micro-blade.

Bet the sparrow didn't pounce out of tree onto the worm. It may have seen it from a limb and flew down to it, but an ostrich that is known for running and not hopping would have no trouble with that worm.

> >
> > And so far we haven't seen perchers any
> bigger
> > than 4 pounds, either in the Early
> Cretaceous or
> > modern. What we see is a fringe theory that
> "They
> > were not really fast ground runners, they
> probably
> > hopped most of the time" in spite of the
> fact
> > ostrich-like and roadrunner-like creatures
> were
> > able to evolve in a dense Cretaceous forest.
>
> >
>
> You need to distinguish between compressional
> perching and tensional perching, and between
> bipedal running and quadrupedal running, otherwise
> it is confusing.

Why? You haven't demonstrated Zs (or any other dino bird for that matter) was "not very fast", "hopped most of the time" or "pounced" out of trees/ferns yet. You are assuming what you are claiming, that's circular.