NESTLESS Every swallow needed its own nest. Sadly, many swallows could not have what they wanted to have. Somewhere in the world, there was a swallow cave with flocks of swallows all year round, and it was a permanent settlement for them. However, some older swallows occupied too many vacant nests as their homes, which resulted in the younger swallows being hungdry and not their own nests. Given the shortage of resources and spaces in the cave, the swallows who longed for freedom had to go through the narrow passage to the outside world. However, was it ideal for them to fly away from the swallow cave?