I found a strange search result for a resource blocked by `robots.txt`. 
Why ist there the Chinese (guessed) text followed by the text `Hello nighthawk!`. Is this an esteregg of Google? 

[![Google Hello Nighthawks][1]][1]

Yesterday I tried to remove the URL from google with Webmaster Tools. 
There was no `Hello Nighthawk!`, only the 'blocked by robots.txt' message. The issue was reported by a co-woker. 

[![reported issue][2]][2]

This is the content of the `robots.txt`:

```User-agent: *
Disallow: /en
``` 

The domains gets redirected in the following way:

```www.domain.com/en -> (301) https://domain.com/en
```

The page `https://domain.com/en` show the normal page with the correct title of the page. 

The title of `domain.com/en` does not contain any of the words.
I have searched the whole project to find the word 'nighthawk'. It is not included. And we never had any Chinese translations. 



  [1]: https://i.sstatic.net/1kwqN.png
  [2]: https://i.sstatic.net/MEv1k.png