Weekly birding round-up: 4 - 10 Jul

Jon Dunn brings you his weekly birding roundup looking back at the best birds from around Britain, Ireland and the Western Palearctic, headlined this week by a Greater Sand Plover in Shetland. More here >

Urban lead contamination alters sparrow behaviour in surprising ways

House Sparrows in a polluted Australian city show heightened vigilance and fear of human gaze—potentially compensating for weakened escape ability caused by lead exposure.