I think the nest is the least of the problem.. those fiberglass isolation links are very weathered, they become less effective at this point and tuning will be interesting. Is the heliax up to the FM element dressed in with twist ties and hose clamps?.. I see why nobody would climb this for inspection.
Someone needs to learn how to dress lines on a tower. Improper bends from tower to antenna and no grounds or even busses. Very little support. That seven eights is going to flop in the wind.
A circular polarized FM antenna ! I had one a wile then found a .94 wave Dominator was the last one in stock before they quit . A pirate in NYC bought the old one . what is the nest ? a Eagle ??
That tower sure is flimsy looking. I wonder if it is really able to be climbed. To get an idea of the height I looked up the call letters, according to Wikipedia. WZHR ZephyrHills 1400 AM 1000watts class C with FM translator 104.3 and WDCF Dade City 1350 AM 1000watts day 500watts night class B with FM translator 102.3
Those 1/4 wave Antennas are surprisingly effective. I have used OMB ( Spain)version MP1 both single and stacked here in the uk , made of stainless steel too.