What made this nest?

[ShockValue]

Pretty cool piece of engineering by the builder. This is in Mason.

[Chef]

Snake

[HIDE-N-SEEK]

Cactus Wren.

[Vantage Point]

Classic Henway nest.

[tex4k]

Cactus wren, and wood thrush both build nest like that, but one is the biggest I've seen. The names I used probably aren't the proper name, just what I grew up calling them.

[El Viejo]

I'd say a Cactus Wren as well. Their nests tend to be 4-6 feet off the ground with a horizontal entrance.

[4dog]

Snake ...heh.

[Smart]

Todd Glass tree blind?

[Jaybo31]

Miniature Velociraptors

[systemnt]

the stupid one of the 3 pigs.

[ShockValue]

the stupid one of the 3 pigs.

I'm going with this.

[Pushbutton2]

I'm going with this.

X2 here [emoji106]

[Dieselman]

Interesting