Editing Bird (section)

====Inbreeding depression====
{{Main|Inbreeding depression}}
Inbreeding causes early death ([[inbreeding depression]]) in the [[zebra finch]] ''Taeniopygia guttata''.<ref name="pmid22643890">{{cite journal |vauthors=Hemmings NL, Slate J, Birkhead TR |title=Inbreeding causes early death in a passerine bird |journal=Nat Commun |volume=3 |page=863 |year=2012 |pmid=22643890 |doi=10.1038/ncomms1870 |bibcode=2012NatCo...3..863H |doi-access=free }}</ref> Embryo survival (that is, hatching success of fertile eggs) was significantly lower for [[sibling|sib-sib]] mating pairs than for unrelated pairs.<ref>{{Cite journal |last1=Hemmings |first1=N. L. |last2=Slate |first2=J. |last3=Birkhead |first3=T. R. |date=29 May 2012 |title=Inbreeding causes early death in a passerine bird |journal=Nature Communications |language=en |volume=3 |issue=1 |pages=863 |doi=10.1038/ncomms1870 |pmid=22643890 |bibcode=2012NatCo...3..863H |doi-access=free }}</ref>

[[Darwin's finches|Darwin's finch]] ''Geospiza scandens'' experiences [[inbreeding depression]] (reduced survival of offspring) and the magnitude of this effect is influenced by environmental conditions such as low food availability.<ref name="pmid12144022">{{cite journal |vauthors=Keller LF, Grant PR, Grant BR, Petren K |title=Environmental conditions affect the magnitude of inbreeding depression in survival of Darwin's finches |journal=Evolution |volume=56 |issue=6 |pages=1229–1239 |year=2002 |pmid=12144022 |doi=10.1111/j.0014-3820.2002.tb01434.x }}</ref>