Your bees are most likely all surrounding the queen in a large cluster within the hive. There should be very little activity observed from your hive. Except for on our nice warm days we tend to have here. When the outside temperature gets above 40-50 degrees, you should see workers taking the opportunity to get out of the hive. Making cleansing flights for the most part. There are no drones in the hive at this time. The bees would be feeding from their honey stores. So hopefully you left them some of their summer forage to dine on.  The bees do have longer life spans in the winter months. You will still have bee deaths though throughout the winter. On these warmer days, you may see a large number of dead bees outside the hive. This is part of the hive cleanup. Since the dead bees ball to the bottom of the hive, the worker bees will take this warm weather advantage to clean out the dead bees.

As the beekeeper, what should you be doing? Make sure your hive is still in good order,  the lids are on and not detached, and the openings are clear of snow so that the hive can continue to be well-ventilated.  If you left or observed large honey stores in the fall. You should be fine at this time. Although you may need to ’emergency feed’ your bees if it has been unusually warm. You may need to feed the bees with fondant or sugar water. But otherwise, this is a great time of year to work on honey super repair, order your bees, and new hardware for new hives or expansion. You should not have to spend any time at all with your bees in January other than observing your hive.

March is the month when your bees could die of starvation if you did not leave them with enough honey stores in the fall or feed them well in autumn. The days are growing longer and the queen knows this. She will increase her egg-laying rate. This means they will definitely need food as the colony increases in size. If their honey stores are depleted, now would be a good time to start feeding if they have depleted their own honey stores to get them going for the spring. Drones should also start to appear in the brood.

As the beekeeper, you should not be getting in the hive unless the days are above 45-50 degrees, and there is no wind or breeze. It’s best not to remove frames if you do get into the hive unless you are inspecting on a day much warmer than 50 degrees.
You should only need to peek at the top to see how their honey stores look. If it appears that they have used all their honey stores, you may want to do some emergency feeding of sugar water to get their energy up and to keep feeding until you notice they are bringing in their own food supplies.
Now would also be a good opportunity to do a varroa mite treatment or at least do one soon if this is something you treat for in your hive in your location. 
With the bee population increasing, now would be a good time to remove the entrance reducer and mouse guards so help alleviate traffic jams at the door.
Now would also be a good time to reverse your brood boxes. put the lower empty one above the upper fuller one. This will help reduce the chance of your hive swarming you. Another would be to add an empty honey super to give the hive more room.
If you left a honey super on in the fall, just leave it on for them to get an early start refilling.  Now if you haven’t ordered your hardware, you’re going to be hitting the suppliers at their busiest time. You really need to have ordered in January.

Flowers in Bloom:

Dandelion, apricot, willow, birch, pussywillow, forsythia, winter heath, iris, snowdrops, daffodil, tulips, crocus, and other spring bulbs. 

Your hives should be at their full operation. You should see lots of nectar and pollen being brought to the hive. You should not be feeding your hive at this time. Brood chambers should be full of eggs and larvae. Make sure your brood boxes are not looking congested as this will encourage swarming.  Your bees should be busy filling honey supers. You can create a small entrance at your supers by drilling a 1″ hole in a super or by adding a small entrance spacer.

Flowers in Bloom:

Fruit trees, berries, sumac, rose, gaillardia, salvia, speedwell, St. John's-wort, sweet pea, yarrow, catmint, clover, penstemon, allium, spiraea, strawberry, thyme. 

The nectar flow has or will be coming to an end. Your bees will search for nectar as best they can. They are beginning to prepare for the winter and get as much stored up as possible.

As the beekeeper, you will be harvesting soon. some may want to test and treat for mites this month. Not a great idea if you have honey supers on as you don’t want to contaminate your supers with any chemicals.  It would be best to first harvest your honey and then treat for mites either chemically or with powdered sugar.  If you are finding that the bees are not storing honey in your upper supers, you may be honey bound. Move the middle frames of honey UP to the next super replacing the lower ones with empty frames to encourage them to move up and fill more supers.

Flowers in Bloom:

Sunflower, black-eyed susan, goldenrod, cosmos, Russian sage, sedum, liatris, aster, rose of Sharon, mint, oregano. 

The hive is prepping for winter. Depending on how your summer is going. There are not many sources for nectar right now except for Golden Rod and Aster plants. Your queen will begin to lay fewer eggs and will be laying just enough for the winter workers.  You’ll begin to notice fewer drones and maybe even see them being evicted from the hive.

As the beekeeper, keep inspecting your hive. Be aware of cooler temperatures before opening your hive. Now would be a good time to determine the strength of your hive and evaluate its performance. Check for the queen. How is her laying pattern? Is the laying pattern solid and strong? Does the hive appear weak and have too few bees? You may want to combine with another hive in the same condition to create one stronger hive. Plan on feeding them through the winter if they appear weak and have limited stores at this time going into winter.  Remove all excess supers, and make the hive more compact. Install your entrance reducers and if mice are an issue, mouse guards.

Flowers in Bloom:

Basil, bee balm, germander, monkshood, goldenrod, aster, sunflower, Russian sage. 

Not much going on outside unless you have some unusually warm days for them to leave the hive for cleansing. Otherwise, your bees are most likely all clustered up and staying warm. If the days are warmer, they may break from the cluster and forage for some of their honey stores and do cleansing flights. Then recluster at night when temperatures fall.