Compensation package for birds

Around the planet, most of the birds used to live on the trees to keep it safe from the preys. As population starting to explode, most of these trees are brought down for building housing, industries and so on.
When all of these happens around the world, I am not sure if any one cared "Where are these birds going to live?"
Only one industry really cared for all these birds. Wondering what this industry is? Picture below gives answer to the question

Birds during their long journey from once place to another had a resting place. Be it desert or a barren land, it has a transmission line for these birds to rest during their long journey from one place to another.

I just wonder "Why these transmission companies haven't build also nest in these lines".