It's a Mud Dobber. It is in the wasp family. They sting the Spiders and paralize them. Then lay there eggs on them for baby food. Hose and a brush should clean away any dirt left behind after you knock them down.
mud or mud and straw
Wasps known as mud daubers...
trees
If referring to the nest of a Mud Wasp, then about the size of a soccer ball
Mud daubers are a variety of wasp which build their nests out of mud or use the nests of other species of wasp. Mud daubers which survive the cold months are immature individuals which spend the Winter in the nest.
the nests? they're made up of mostly mud
crocodiles nests are made out of mud, sticks and plants :P
Yes.
Yes, it cetainly does. We painted our porch ceiling blue in 1996 and have never has a wasp build there.
California Ceiling (California knockdown) is drywall mud sprayed onto a ceiling using a hopper and lightly flattened usually with a special knock down trowel
My dad used a putty knife to scrape it off and it didn't break.
Kingfisher is a bird that lives in wetlands. It builds nests in the mud banks.