In the UK two frequent garden visitors on the bird feeder and bird tables are the Blue Tit and the Great Tit. Both these birds are common in the woodlands where I took these photographs.
Length:12cm Wingspan:18cm Weight:11g
UK breeding: 3,600,000 UK wintering:15 million
Length:14cm Wingspan:24cm Weight:18g
UK breeding: 2,500,000
facts from RSPB.