For snapshot run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:Factory:git-workflow:staging:miska:bird3:2/snapshot/devel:Factory:git-workflow:staging:miska:bird3:2.repo
zypper refresh
zypper install bird3
For product nonfree run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:Factory:git-workflow:staging:miska:bird3:2/product_nonfree/devel:Factory:git-workflow:staging:miska:bird3:2.repo
zypper refresh
zypper install bird3
For product run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:Factory:git-workflow:staging:miska:bird3:2/product/devel:Factory:git-workflow:staging:miska:bird3:2.repo
zypper refresh
zypper install bird3