Uncommon Birds in Mayo
Our list for Mayo has 61 uncommon birds recorded regularly there: 8 residents, 7 summer visitors, 4 winter visitors, 28 passage migrants and 14 scarce visitors
Most likely in October
GBIF · OctShare of all bird records in Mayo in October, 2019–2024. Each month links to that month’s page.
All 61, most common first
Eurasian SiskinSpinus spinusSummer visitorUncommon11–13 cmRegularly Mar–Oct
Common ShelduckTadorna tadornaResidentUncommon58–67 cmRegularly Jan–Jun
Great ShearwaterArdenna gravisPassage migrantUncommon43–51 cmRegularly Aug–Sep
SparrowhawkAccipiter nisusResidentUncommon28–38 cmRegularly Jul–Apr
Common TernSterna hirundoSummer visitorUncommon31–35 cmRegularly May–Aug
Horned GrebePodiceps auritusPassage migrantUncommon31–38 cmRegularly Jan–Mar
Long-tailed TitAegithalos caudatusSummer visitorUncommon13–16 cmRegularly May–Feb
Pomarine JaegerStercorarius pomarinusPassage migrantUncommon46–51 cmRegularly Aug–Oct
Great Crested GrebePodiceps cristatusWinter visitorUncommon46–51 cmRegularly Oct–Jun
Eurasian WoodcockScolopax rusticolaScarceUncommon33–38 cm
Atlantic PuffinFratercula arcticaSummer visitorUncommon28–34 cmRegularly May–Sep
Little TernSternula albifronsSummer visitorUncommon21–25 cmRegularly May–Jul
CorncrakeCrex crexPassage migrantUncommon22–30 cmRegularly May–Jun
Grasshopper WarblerLocustella naeviaPassage migrantUncommon12–13 cmRegularly Apr
WhitethroatCurruca communisPassage migrantUncommon13–15 cmRegularly May–Jun
BuzzardButeo buteoResidentUncommon51–57 cmRegularly Jul–Apr
GadwallMareca streperaWinter visitorUncommon46–56 cmRegularly Oct–May
PochardAythya ferinaWinter visitorUncommon42–49 cmRegularly Nov–Feb
TreecreeperCerthia familiarisSummer visitorUncommon12–14 cmRegularly Jan–Oct
Red KnotCalidris canutusPassage migrantUncommon23–26 cmRegularly Sep–Feb
Black-tailed GodwitLimosa limosaPassage migrantUncommon40–44 cmRegularly Sep–Oct
Yellow-browed WarblerPhylloscopus inornatusPassage migrantUncommon10–11 cmRegularly Oct
MerlinFalco columbariusPassage migrantUncommon24–33 cmRegularly Sep–Jan
Data: EOD – eBird Observation Dataset (Cornell Lab of Ornithology), accessed via GBIF.org, CC BY 4.0. Records from 2019–2024, aggregated and filtered by Birdfact. How these lists are made