No, it's not cruel. However, it depends on how you define cruelty. If you think honey is cruel, then, yes, you might consider birds' nest soup cruel. Most harvesters would not bother those nests with egg on them. So, consider birds' nest as an expensive honey that only can be afforded by those few.
Bird's nest soup is a Chinese delicacy. It is made from the nest of a swiftlet, a bird in southeast Asia.
the size of a soup bowl
It is literally a birds nest made from edible fibers. Usually a swallow's nest :)
Spain. they nest every summer mostly in the south
Authentic bird's nest soup is made using the nests of the swiftlet, a tiny bird in southeast Asia. The swiftlet lives in dark caves. Instead of twigs and straw, the swiftlet makes its nest from strands of its own gummy saliva, which hardens when exposed to air.
The nest was built by birds.
it looks like a birds nest
Te specific study of the birds nest is calle "ornithology".
The nests of cave swifts are used in bird's nest soup.
It is quite possible as there IS a delicious soup that is called "Bird's Nest Soup". It is considered to be quite the delicacy & IS NOT made from a bird's nest.
Birds mate after and before making a nest
Nestle has 3 birds in a nest on a branch