I think you are making a mountain out of a molehill. A moderator, using his experience, migrated your question to a SE site he thought more likely to provide an answer. You seem offended that a question you regard as science has been “downgraded” to something you perhaps regard as more mundane.
The moderator knows the site. He was trying to help. Do you want an answer or not?
For what it’s worth, the natural history identification side of SE Biology is a bit of an aberration. It is what many people regard as biology and it has a large audience. But it it is restricted to identification. And, although there is no prospect of removing it, in my opinion it just does not fit the SE model. How do you use the wisdom of myriad identifications of fleas to search for the one you found on your dog? Not by a text search, and SE doesn’t have a visual image search facility.
Addendum: ‘Migrated’ doesn’t necessarily mean ‘off-topic’
The poster persists (in his comment on this answer) in declaring that his question was declared ‘off-topic’, and invokes Wikipedia and his biology text as evidence that ecology is a part of biology. Few would doubt that ecology is part of biology, but what I read regarding the migrated question on Gardening & Landscaping is:
This question was migrated from Biology Stack Exchange because it can be answered on Gardening & Landscaping Stack Exchange
Nothing about ‘off-topic’.
Something similar might occur with migration from Biology to Bioinformatics of Medical Sciences, or from Chemistry to Biology (for biochemical questions). All the moderator was trying to do was move the question to the SE group which was most likely to be frequented by people who could answer.