Having read the text, you learned that on the rings put on the legs of migratory birds, it is indicated:

Solution:

The rings on migratory birds are typically used for identification and tracking. Based on common ornithological practices:

1. The name of this type of bird
2. Number and name of the country
3. The date the bird was ringed
4. The name of the person who put on the ring

The most common information indicated on bird rings for scientific purposes includes the number and the country of the ringing station. Sometimes, additional information is provided on a web link or phone number. Option 2 is the most likely correct answer in a scientific context.

Answer: 2) number and name of the country