Welcome to the totally absurd "Monty Pythons Guide to Life and Identifying Trees over a Long Distance!", the 43rd Best Monty Python App on the Marketplace.
* Dummies guide to Brick Hypnotising with Video Evidence.
* A Quick Lesson in Irritation.
* Very Silly Soundboard that can be used for your Mobiles Ringtones or Notifications.
* And finally, assistance with woodland identification for the tree spotters amongst you!
AND NOW FOR SOMETHING COMPLETLY DIFFERENT
Adult and juvenile swallows start to move south by mid-August as the autumn migration begins. Autumn migration is rather drawn out with birds moving short distances every few days to settle at lower latitude roosts. The average body mass of the birds using such roosts gradually increases into the autumn. As the weather becomes less stable, this essentially forces the push southwards.
For example, Irish breeding swallows cross into Wales and then southern England during August. The vast majority of British breeding birds then leave our southern shores during September with gradual southerly movements.
The spring migration is a far more straight through run of affairs - the birds have more of a necessity to get where they are going. There is a high level of competition amongst males to secure a mate and nesting site. In spring, experienced birds may be able to return from South Africa in about five weeks at a speed of about 300km per day.
Although swallows are thought to exclusively migrate long distances each winter to equatorial regions, a substantial minority winter between their breeding territories and wintering strongholds.