posted on Dec, 30 2013 @ 11:01 PM
The 'perch' idea really isn't a practical suggestion in terms of construction.
To get an idea of scale, the Vestas V90-3MW is something of an industry standard with a 90m (295') tall tower, a 70 ton nacelle on top with 360
degree horizontal rotation and 3 x 44m (144') 7 ton variable pitch blades mounted on the hub at the front of the nacelle. The circle described by
the blades is 90m (295') diameter centred at the top of the 90m tower and it rotates at 16rpm. The maximum swept height is 145m above the ground and
even taller towers are used in certain locations.
If such a perch was added it would need to be through the centre of the nacelle (houses the gearbox, bearings, generator, transformer, communications,
wind speed/direction sensors and control logic etc) itself to not interfere with the turbine's ability to align to the wind direction and would add
over 50m to the height of the tower, severely obstructing removal of the nacelle when required ('perch' tower would need to be dismantled first).
Placing such a facility for birds in the middle of a windfarm could actually be the cause of more bird fatalities if it draws more birds into the
Not going to happen is the bottom line.
The Utah birds are showing signs of a biological or chemical agent which is in their environment either naturally or deliberately introduced (most
likely source IMO).