The surveyor should have his objective in conducting the survey and some idea to interpret the data. Solely presenting the graph mean almost nothing to the outsiders.
If HF suggest that there was a major decrease on bird population in Kam Tin, does it imply that there was also a big change of habitat. If this is the point you want to make, you may also present the habitat data as supportive information.
Just look at the graph, it could relate me to influx of migrant, climate change, seasonality, birds and habitat, bird waves....etc.
I think it must be some interesting stories underneath. Please try to be focused on the point you want to make and we will have more new stories to learn.
Thank you.
