Great snipe – Gallinago media
is a small stocky wader in the genus Gallinago. This bird’s breeding habitat is marshes and wet meadows with short vegetation in north-eastern Europe, including north-western Russia. Great snipes are migratory, wintering in Africa. The European breeding population is in steep decline. The birds are noted for their fast, non-stop flying capabilities over huge distances. They can fly up to 97 kilometres per hour, with researchers finding little evidence of wind assistance. Some have been recorded to fly non-stop for 48 hours over 6,760 kilometres (4,200 mi). Their wings are not especially aerodynamic, lacking pointed tips, and they typically do not stop to feed despite having opportunities.
At dusk during the breeding season, the males display at a lek (arena), standing erect with chest puffed and tail fanned out. They may jump into the air, and will produce a variety of rattles, clicks, buzzes and whistles while displaying. Three to four eggs are laid in a well-hidden nest on the ground.

These birds forage in soft mud, probing or picking up food by sight. They mainly eat insects and earthworms, and occasional plant material. They are difficult to see, being well camouflaged in their habitat. When flushed from cover, they fly straight for a considerable distance before dropping back into vegetation.
The sound they make during lek sounds like this
Recording by Krzysztof Deoniziak from Xeno-Canto

A short movie-scene from the lek that I visited 2015