Question

comprehend the passage
Here is scientific experiment on the homing birds​

Answer 1

1)the swallows were marked with a red dye to identify them easily.

2)The methods of identifying birds which were mentioned in this passage are of marking the birds with red and marking them with aluminium rings put on one leg which haf the address and number.

3) How do the birds find their way on that long

journey, which they had never made before , what senses do they use to find their way, how they know  in which direction to go until they can see familiar landmarks are the facts about homing or migrating birds are difficult to explain.

#BAL