Feeding the birds is a very popular activity, especially with the elderly.
Once we start we need to continue as you make the birds dependent on your generosity.
Here in Minnesota with snow blanketing the entire ground one thing that birds need is grit.
With the snow on the ground it can be hard for the birds to find the grit they need.
Birds need grit to help break down what they eat.
2 way to help the birds is one to have a small container close to the grit feed...or..you can mix a small amount with the seed.
Most any store that carries pet supplies will also have grit for them. Farm stores also.
Keep enjoying the birds and give them that little extra that they need to stay healthy