The location of your washer/dryer will determine where the vent pipe is. If it is on an outside wall of your home then the vent will be relatively close to the ground. If they are located in a 'closet' in the interior of your home then the venting has to run up the wall, thru the attic, and get vented high up. I know this is problematic for some people, but that's pretty much the way a slab house has to be done (as opposed to crawlspace or basement construction).
It sounds like your situation can be resolved quite easily.
As for the birds nesting in the 2nd posters issue: try one of these items from Lowe's
http://www.lowes.com/pd_29680-85334-VTL0015_0__?productId=3203015&Ntt=dryer+vent+caps&pl=1¤tURL=%3FNtt%3Ddryer%2Bvent%2Bcaps&facetInfo=
or
http://www.lowes.com/pd_433309-85334-VTL0053_0__?productId=4753388&Ntt=dryer+vent+caps&pl=1¤tURL=%3FNtt%3Ddryer%2Bvent%2Bcaps&facetInfo=
I could help if either of you wishes, I am disabled Veteran but I grew up in a construction family. Let me know.