I keep a colour coded spreadsheet of the birds on my Local Patch, Howick / Craster. I have Boulmer separately but might create a 'uber patch' next year copying my fellow blogger Steve Gale who has a similar set up in Surrey.
As you can see above, the colour codes look like this. Green is a common or regular species seen in at least 10 out of the last 12 years, Orange species are Uncommon seen in 6 - 9 years, Blue are Scarce seen in 4 - 5 years and Red are Rare birds on the patch being seen in only 1 - 3 years out of the last 12.
The lemon filling are birds on my garden list.
Using this record, I am looking at how the rest of 2020 will pan out. If I have a fair wind I could break last years record total of 163 species. Todate ( the pic above is out of date) I am on 161 species this year only needing another 3 to make it the best. Out of the species in the Green and Orange categories I am missing 6 possibles. They are Gadwall, Little Auk, Black throated Diver, Waxwing, Twite and Snow Bunting. Hopefully I can get three of those and maybe jam in on a rarer species too if I am lucky....fingers crossed.
Sorry to have bored you with my anorak tendencies....