A bird that sleep during the flight. The common swif is a curious bird who loves the air like the most. In a fascinating way they spent over nine month flighting continously every year, during the night they rise their little and light bodyes to twothousand meters, there they sleep confortably whyle they hold a slowler movement. Even they eat insects whyle they flight and they breed too!! The common swif (''vencejo'' in Spanish) is common to be find in Europe, Asia or Africa.

Sex in plants? How the plants with flowers make the reproduction betwen them? Yes, every body knows that they have pollen but, How It works? The pollen no only works producing us allergy, the pollen is produced by the male flower and it travel to female flower , It sounds like something? yes! a sexual reproduction. Inside the little grain of pollen there are little cels that move finding the female cell, certainly it is sperm!! If you observe it toward a microscope you will see a similar sperm to humans or any animal. It's fascinating, and even more fascinating is the next: the bigest sperm in the world (including all the animals and of course the humans) is inside the pollen of a peculiar plant, Cica palm. This is a very old plant that live normaly in tropiclal zones It's similar to a little palm and you can find It too in Málaga where I live.