public class Base
{
    private static Logger _logger = LogManager.GetCurrentClassLogger();
    private void Foo()
    {
        _logger.Info("Hello world");
    }
}

public class Derived : Base
{
    new private static Logger _logger = LogManager.GetCurrentClassLogger();

    private void Fee()
    {
        _logger.Info("Hello world");
    }
}

public class Base
{
    protected static Logger _logger = LogManager.GetCurrentClassLogger();
    private void Foo()
    {
        _logger.Info("Hello world");
    }
}

public class Derived : Base
{
    private void Fee()
    {
        _logger.Info("Hello world");
    }
}