Spotted flycatcher the cuckoo, but became so good at recognising the intruder's eggs that it ceased to be victimised. A contrast to this is the dunnock, which appears to be a recent cuckoo host, since it does not show any egg discrimination. A study conducted at two different locations in southern England found that one third of nests were predated. The Eurasian jay ("Garrulus glandarius") was the most common aerial predator, consuming both eggs and chicks. The domestic cat ("Felis catus") predated a small fraction of the nests. Spotted flycatcher The spotted flycatcher ("Muscicapa striata") is a small passerine bird in the
European Bird Census Council forces behind population changes and use common bird indicators as a proxy for environmental health, and thus inform policy. Monitoring data is published as the European Breeding Birds Atlas, the second of which (EBBA2) is currently in preparation. The data collected as part of the PECBMS and EBBA2 programmes is also distributed on the EBCC-run portal, EuroBirdPortal, as well as through the Global Biodiversity Information Facility (GBIF). The EBCC run a conference every three years, devoted to ornithological monitoring, conservation and research in Europe and abroad. The organisation also publishes the Journal of the European Bird Census Council, entitled "Bird