There's a type of insect called a bagworm, they cut little pieces of wood with their pincers and stick them together to make little houses. Some of the rarer varieties make really cool patterns, but a lot of them make random pinecone shapes for the purpose of camouflage.
The Pokémon "Pineco"...
Thanks for the translation. This was one of those times where I didn't realize this manga had been purged*, until your upload brought it back to my attention.
*In English, didn't check any others
"You′re trying to understand.
I told you your brother had been killed.
Yet, here he stands in the very shadow of the man you came here to destroy.
You came here to avenge his death.
You came here to save mankind.
You see now, you cannot do both."