Editing Song thrush (section)

===Breeding and survival===
[[File:Turdus philomelos -Apenheul Primate Park, Netherlands -eggs-8.jpg|thumb|upright|Three eggs in a [[nest]]]]
The female song thrush builds a neat cup-shaped nest lined with mud and dry grass in a bush, tree or creeper, or, in the case of the Hebridean subspecies, on the ground. She lays four or five bright glossy blue [[Egg (biology)|eggs]] which are lightly spotted with black or purple;<ref name="Clement" /> they are typically {{cvt|2.7|x|2.0|cm|in|frac=8}} size and weigh {{cvt|6.0|g|oz|frac=16}}, of which 6% is shell.<ref name="BTO" /> The female incubates the eggs alone for 10–17&nbsp;days, and after hatching a similar time elapses until the young fledge. Two or three broods in a year is normal, although only one may be raised in the north of the range.<ref name="Clement" /> On average, 54.6% of British juveniles survive the first year of life, and the adult annual survival rate is 62.2%. The typical lifespan is three years, but the maximum recorded age is 10&nbsp;years 8&nbsp;months.<ref name="BTO" />
The song thrush is occasionally a host of [[brood parasite|parasitic]] [[cuckoo]]s, such as the [[common cuckoo]], but this is very rare because the thrush recognizes the cuckoo's [[mimicry|non-mimetic]] eggs.<ref name="BB95" /> However, the song thrush does not demonstrate the same aggression toward the adult cuckoo that is shown by the [[Common blackbird|blackbird]].<ref name="Grim" /> The introduced birds in New Zealand, where the cuckoo does not occur, have, over the past 130&nbsp;years, retained the ability to recognise and reject non-mimetic eggs.<ref name="JAB" />

Adult birds may be killed by [[cat]]s, [[little owl]]s and [[Eurasian sparrowhawk|sparrowhawks]], and eggs and nestlings are taken by [[European magpie|magpies]], [[Eurasian jay|jays]], and, where present, [[Eastern gray squirrel|grey squirrels]].<ref name="Brown" /><ref name="RSPB" /><ref name="NatEng" /> As with other passerine birds, parasites are common, and include endoparasites, such as the [[nematode]] ''Splendidofilaria (Avifilaria) mavis'' whose specific name ''mavis'' derives from this thrush.<ref name="nematode" /> A Russian study of blood parasites showed that all the fieldfares, redwings and song thrushes sampled carried haematozoans, particularly ''Haemoproteus'' and ''[[Trypanosoma]]''.<ref name="Markovets" /> ''[[Ixodes]]'' ticks are also common, and can carry pathogens, including tick-borne [[encephalitis]] in forested areas of central and [[eastern Europe]] and Russia,<ref name="Pentagon" /> and, more widely, ''[[Borrelia]]'' [[bacteria]].<ref name="Kipp" /> Some species of ''Borrelia'' cause [[Lyme disease]], and ground-feeding birds like the song thrush may act as a reservoir for the disease.<ref name="EID" />