Can I import eBird records to Bird Journal?
Yes. The eBird record format needs installing from the library first, and here is why it is not there already.
Updated
Yes, on any device — open Tools ▸ Import, choose the eBird format and pick your file.
Whether you already have that format depends on where your account says you are. eBird uses the Clements taxonomy, so accounts anywhere in the Americas — where Clements is the default — get the eBird Record Format when the account is created. Everywhere else it is not installed, because it would drag in a very large taxonomy that most people there have no use for.
If it is not in the Format list, open the Library, search for eBird or filter to Record Formats, and press Install. You may be prompted to install a taxonomy alongside it; say yes, as the format cannot match species without one.
The import article covers the rest, and exporting from eBird covers getting the file out of eBird in the first place.