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Birds on Lineside Cables, Railway nr Borrowash, towards Long Eaton
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The signals are Borrowash's Up Starter with side repeater.
The "Up starter" signal passes control of a train to the next signal box in the "Up" direction (direction of travel, here towards Trent Junction). (Thanks to user: Mr. John A. Thickitt).
Note the many birds (swallows or starlings?) perched on lineside cables.