Figure 1

Breeding Bird Survey (BBS) population index trends for chaffinch and greenfinch for (a) GB overall (adapted from Woodward et al.32) and (b) GB survey sites identified as peri-domestic or rural (i.e. all other) habitat (BTO unpubl. data). The vertical, red, dashed line indicates the start of the greenfinch decline and chaffinch plateau period (early decline period), while the vertical, blue, dashed line indicates the start of the chaffinch decline period (late decline period). Plotted with 95% confidence intervals and indexed from 1994 (the first year of the BBS).