If this continues, there may well not be any left by the year 2050.

I believe we need to act now to stop this from happening.

This is why we go into schools, to show what is happening to our wildlife and show how we can help stop this.

sSave the hHouse sSparrow

Important words in a title are often capitalized.

I believe we need to act now to stop this from happening.

We can help this situation immediately by protecting the environment in which they need to live in: our gardens.

But I believe, however, that we need to think about the long-term solutions and we can only do this by educating our children.

This is why we go intovisit schools to show what is happening to our wildlife and to show how we can help stop this.

alternative

sSave the house sparrow

The house sparrow is still our most common bird, but its numbers have declined by more than 70% over the last 10 years .

I believe we need to act now to stop this from happening.

We can help this situation immediately by protecting their environment they need to live in: our gardens.

But I believe we need to think about the long-term solutions, and we can only do this by educating our children.

I think this should be combined with the sentence above to become, "We can put up nesting boxes and bird feeders, but I believe we need to think about long term solutions. We can only do this by educating our children." It's not necessary, I just think it flows better.

This is why we go into schools to show what is happening to our wildlife and show how we can help stop this.

sSave the hHouse sSparrow

Don't forget title case! (In a title, capitalize every important word.)

The house sparrow is still our most common bird, but its numbers have declined by more than 70% over the last 10 years .

I believe that we need to act now to stop this happening.

We can help this situation immediately by protecting the environment they need to live in:, our gardens.

But, I believe we need to think about the long-term solutions and w. We can only do this by educating our children.

I think two sentences sounds more natural here.

This is why we go into schools to show what is happening to our wildlife and show how we can help stop this.