"Manufactured homes for the birds "

High Country News had a short article of a creative and somewhat desperate attempt to provide artificial cactus needed for the Coastal Cactus Wren:

"With a catastrophic rise in wildfires over the past two decades -- most of them sparked by human activity in this rapidly developing corner of California -- thousands of acres of hard-won coastal sage reserves have gone up in smoke. The wren’s population has consequently plummeted. The bird nests only in mature cacti at least 3 feet tall, and such stands take decades to recover from burning."

Read the full article (available free) hereSeEtta