Box plots of (a) female reproductive status and ΣPCBs, and (b) cause of death groups and ΣPCBs.

<p>The dark horizontal line indicates the median, and the dashed blue line the mean. Outliers are highlighted by blue circles.</p

Estimated pregnancy rates, based on the presence of a foetus and excluding the conception period, of mature female harbour porpoises.

<p>¹Included porpoises from the Iberian Peninsula population, and all causes of death.</p><p>²Included porpoises from the Danish North Sea and Inner Danish waters.</p><p>³Average age of 50% mature.</p><p>⁴Mean age of first-time ovulators.</p><p>⁵Study did not exclude the mating period, and included two recently pregnant lactating females.</p><p>Estimated pregnancy rates, based on the presence of a foetus and excluding the conception period, of mature female harbour porpoises.</p

Accumulation of PCBs with age in male stranded UK harbour porpoises.

<p>Fitted regression line and 95% CI values are shown, n = 257. Annual ΣPCB accumulation rate is 1.11 mg/kg.</p

Total number of corpora scars (corpora albicantia and corpora lutea) in UK stranded harbour porpoise ovaries as a function of age (n = 225).

<p>Dashed box highlights three females that presented with higher than expected number of corpora scars.</p

ΣPCBs as a function of (a) corpora scar number (n = 266) and (b) age (n = 254).

<p>Graphs exclude two neonates ranging between 86.9–159.7 mg/kg in ΣPCBs. Blue line represents the threshold level (9 mg/kg ΣPCBs mg/kg lipid) for adverse health effects.</p

Frequency distribution of age profiles for female reproductive status categories in UK stranded harbour porpoises (n = 250).

<p>Frequency distribution of age profiles for female reproductive status categories in UK stranded harbour porpoises (n = 250).</p

Criteria for assessing categories of reproductive failure in UK harbour porpoises.

<p>Criteria for assessing categories of reproductive failure in UK harbour porpoises.</p

Seasonal incidence of opportunistic reports in all garden bird mortality 2001–2006.

<p>Hatched bars – winter (Dec-Feb), open bars – spring (March–May), stippled bars – summer (June–Aug) and black bars - autumn (Sept-Nov). Note break in axis indicating an unprecedented level of reporting in autumn 2006.</p

Regional change in greenfinch occurrence in gardens in response to trichomonosis.

<p>Mean reporting rate from GBW of greenfinch, chaffinch and dunnock in spring 2005/06 (filled bars) and 2007 (open bars) in areas of Low, Intermediate and High incidence of trichomonosis incidence (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0012215#pone-0012215-g003" target="_blank">Fig. 3</a>). Bars represent 95% confidence limits.</p

Distribution of finch trichomonosis incidents in 2006.

<p>Gardens reporting at least one incident of finch trichomonosis (large red dots) and all other sites (small yellow dots) contributing to the systematic survey. The shading indicates relative incidence of trichomonosis recorded by the opportunistic survey (incidents per thousand households for each county interpolated from county centroids). The heavy lines delineate areas of High, Intermediate and Low incidence, based on the opportunistic survey data.</p