We used to have Blue Jays come around and really squawk and squawk. Now we have crows, mostly mornings doing the squawking, squirrels doing the whining and a woodpecker playing the drums on the telephone poles. Natures band!
In many shops you can buy special repair kits (although, in holland you can) lot of choise between colours.
Many different materials also, from brown pencils, to special wood gummy..
Our Chafuko did the same as a puppy, he chewed on our little table.
Only on that little table (amost everyting else is wood) we just said very loud "chafuko No!" After a little while he just stopped.
