The back of a woman wearing a white jacket with blue jeans walking towards a flock of birds.
Someone person was near a bunch of birds.
A person was walking towards the birds therefore they were near the birds
a woman is a person, therefore 'person' can be used as a synonm. A flock of birds can also be described as a 'bunch of birds' and the fact that the woman is walking towards them indicates she was 'near a bunch of birds'.
Woman is someone, and bunch of birds are a flock of birds.