CLEAN : In Bulgaria nature leaves green legacy along Iron Curtain route

The video covers various topics, starting with an introduction and context setting. It then delves into discussions on grammar and data, touching on personal credit and unique passwords. The final section focuses on bird species, highlighting the diversity and migration patterns observed throughout the year.

What does the text imply about the diversity of bird species?

What are some types of birds mentioned in the text?

What is the significance of the number 315 in the context of the text?

Describe the migration periods mentioned in the text.

Explain the relationship between spring and autumn migration as mentioned.