nest

Made out of thorns! Desert birds don't mess around. The entrance is near the bottom.
I think this is a verdin's nest: http://www.arizonensis.org/sonoran/fieldguide/vertibrata/auriparus.html

[Bill Davidson]

Fascinating.

[KoalaGardens🐨]

I bet the inside is lovely for them

[LManning (Laura)]

That’s one way to keep the bad guys out!

[Diana]

The shape is very similar to a weaver nest.

[Krista Marson]

@ludwigsdiana I thought the same thing!