Scientists refer to aquatic-snails nests appearing bubble-shaped or similar to a cocoon where pairs of snails reproduce every 6 days or few weeks.
Sugar ant nests can be found between rocks and in holes in the woods. Their nests usually look like raised hills with a hole in the middle.
Owls do make their own nests.In fact they look alot like birds nest's but bigger.
Flies do not make nests, they lay their eggs directly on a food source.
Zebra's behave pretty much like horses and don't have "nests". They lay down when and where it suits them.
Squirrels build nests kind of like birds do. They pretty much look like bird's nests, and if they build them inside a tree, it looks like a nest inside a birdhouse does.
Finch nests look like a normal bird nest with a top encompassing most of the nest. Sortta like an igloo. There's a tunnel that leads to the main nesting area. Pretty complex design compared to most bird nests. I have one on my front porch in a hanging plant basket. It has about 4 eggs in it last time I looked.
They sound like anthills the way you describe it. Ants will build little nests that look like that.
Hawk nests are just mats of sticks, placed on an elevated cliff, or in the fork of a tree.
no
no but they do like shelter
Generally they look like fuzzy piles of dirt, but they can range from being shaped like volcanos to polyp like shapes depending on the species of ant.
It looks like a bunch of tiny bubbles bunched together, kinda like foam but the bubbles are about the size of a pin head.