Unlike other bird groups and families the way of procuring food of the Picidaeresulted in a feature adaptation of their body. As their name suggests, woodpeckers get their food by pecking, chiseling and hollowing tree trunks, especially those touched by rot, to extract and feed on larvae and insects.When a woodpecker is in full action, its beak hits the tree with a velocity of 6-7 m/s, which is about 20 km/h, being able to hit the tree 20 times per second. Stopping is done virtually instantaneously, in a millisecond; the deceleration (slowing) of the impact is 1000 times stronger than the force of gravity.
The philatelic issue dedicated to these birds presents within its 4 postage stamps, species of woodpeckers found in Romania’s avifauna: Picoides tridactylus, Dryocopus martius, Picus viridis and Jynx torquilla.
Issue Date: 09.02.2016 Designer: Razvan Popescu Process: Offset Colours: 4 Colours Size: Stamp size: 33 x 48 mm, Minisheet size: 129 x 134 mm, Block size: 166 x 134 mm (in philatelic album) Values: 2.00 Lei; 4.50 Lei; 5.00 Lei; 14.50 Lei