| preferred habitat of breeding birds may be compromised by climate change: unexpected effects of an exceptionally cold, wet spring. | previous studies of the consequences for breeding birds of climate change have explored how their populations may respond to increasing temperatures. however, few have considered the likely outcome of predicted extreme conditions and the relative vulnerability of populations in different habitats. here, we compare phenology and breeding success in great tits and blue tits over a 10 year period, including the extremely harsh conditions during spring 2012, at three sites in eastern england--mixed ... | 2013 | 24058694 |