MOBILE VERSION A bird maintains itself in the air by imperceptible balancing. Theme - «Bird Day»
Calendar: «National Bird Day (United States)», «International Migratory Bird Day», «World Migratory Bird Day», «Bird Day».
21 quotes & wishes
«A bird maintains itself in the air by imperceptible balancing» illustrated quotation. Bird Day, free quote pictures for Facebook, Twitter, LinkedIn, Reddit, Pinterest and other social networks.
Quotes and wishes: «Bird Day»
A bird maintains itself in the air by imperceptible balancing
A bird maintains itself in the air by imperceptible balancing, when near to the mountains or lofty ocean crags; it does this by means of the curves of the winds which as they strike against these projections, being forced to preserve their first impetus bend their straight course towards the sky with divers revolutions, at the beginning of which the birds come to a stop with their wings open, receiving underneath themselves the continual buffetings of the reflex courses of the winds.
Leonardo da Vinci