Our hospital is built on land that abuts a DNR nature preserve. We have a resident turkey and deer population which our patients and staff alike find fascinating to watch. Our building is designed in a style that we would call in the Midwest an "exposed ranch" in that the back is two exposed stories, most of which are windows. I am contacting you as we regularly have turkeys, especially males, who come up to the building and "peck" at the glass, sometimes until they have bloodied their beaks. What can we do to deter this behavior?

I think the cling idea has merit, and you could use any kind of pattern that is most attractive to you--with the main idea being that if the window surface is made nonreflective, that should keep the bird from coming around to attack itself.  Other options could be something like the Scarecrow to squirt the bird away  (just make sure to turn it off when you are going outside yourself!)

Our City Hall has large pine trees that hang over public sidewalks and birds crap all over sidewalk daily where it has become a timely issue cleaning and possibly a health issue. What can we hang to keep the birds out of the trees? Thank you

If the birds are roosting there for the night, it can be a big job to get the birds to move.  You will probably need a wildlife professional locally to try and scare the birds away with pyrotechnics or some other solution.  There really isn't anything that will for sure keep birds away from trees.  Do you know what kind of birds you have problems with there?  Sometimes a sonic device like Bird Chase Super Sonic can work, so check that out if you are dealing with one of the species that it is designed to try and deter.

How do I keep barn swallows from building their nests on my front porch?

Barn Swallows are valuable neighbors that help control flying insects, including insect pests such as flies and aphids.  In many areas, their populations have declined by over 40% in recent decades (see for example this swallow report from Canada, so they could use our help.  Some folks worry that the birds will be messy, leaving droppings on their porch, but this usually only lasts for the last 6-10 days that the young birds are in the nest.  That’s when the birds start to defecate over the side of the nest.  Before that the parent birds will keep the area pretty clean.  So as long as the nest isn’t right over your door, consider letting these insect eating birds stay put, and just hose down the area after they leave.  If you really do need to keep them from nesting on your porch, you can check out some of my recommendations.

I have this pigeon who hangs around the balcony and I need him gone. I have some very small grandkids and I don't want this bird around. This is new to me but I need to get this under control.

The first thing to ask yourself is how important it really is for you to get rid of this bird (or birds, often there are more than one)?  Unless the bird is making a mess with its droppings, it isn’t much of a threat, and your grandkids may even enjoy having the bird around. If you do decide that you really need to get rid of it, then you should watch it for a little while and notice what it is doing on your balcony.  Is it eating something there like pet food that you need to get rid of?  Is it trying to build a nest, or does it just hang out there?  If it regularly sits or hangs out in just one or two places, Bird-B-Gone has several products that can keep pigeons from nesting or perching on ledges or other areas.  Take a look at the bird deterrents and which ones might best cover the area where the bird likes to hang out.