Which of the following is a disadvantage of ornithophily?
It can result in the transfer of pollen to the wrong species
It is less efficient than other forms of pollination
It requires a large population of birds to be successful
It can only occur during the day
Ornithophily is generally less efficient than other forms of pollination, as birds are not as effective at transferring pollen as insects.
Option 2 is the correct answer.