When the small long-range aircraft, with the sickle-breaking-shaped wings and forked tail in the South, then the summer is over soon. With their typical screaming of the Swifts from may to July on balmy evenings especially in the cities for the summer atmosphere. However, in the first days of August, you are already on the go – or better on the direction of Africa. What time is it exactly that you were actually on the way, the depends on the breeding history, says Ingolf Grabow from the FEDERAL government in Frankfurt.
Often the trigger to begin in mid-July, adds Matthias Werner from the bird protection station for Hessen and Rheinland-Pfalz. "The main trigger is the beginning of August – but still single until September." If the two to three young birds of the Apus Apus (the Footless) have left the Nest after an average of 40 days to break up the birds with their span widths of up to 44 centimeters, because you can make the flight basically everything: eat, sleep, drink and even mate. "The boys are flying around a few days in the vicinity of the nest – and then with the other in the direction of Africa," says Grabow. "The young birds have all of a sudden become self-reliant." to be able to
in order To fly, they are not likely to be heavier than 40 grams. Usually they would be lined up in the last days before the departure, because you have Overweight. "The parents are on your feet soon, you up to 60 grams," says Susanne Schmid from the FEDERAL government in Mainz. "35 of feed bales of 300 insects fed to one set of parents on the day."
Date Of Update: 08 August 2020, 04:19
