The graph shows the falling rate of the UK willow tit, whose numbers have been falling sharply since the mid-1970s. The species has been Red-listed in the UK since 2022. It has also undergone range contraction, becoming locally extinct in many of its former haunts, especially in southern and eastern Britain. It should be noted, however, that this is only for the UK willow tit.

It should be noted, however, that this is only for the UK willow tit. The willow tit's conservation status is least concern, with a population between 175 to 253 million mature birds.