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Chronology of arrival on the breeding grounds, nest initiation, and hatching of Northern Pintails in North America.

RegionArrivalNest InitiationHatching
Prairie grasslands
North Dakotalate Mar–early Apr1mid-Apr-late Jun8early Jun-late Jul15
s. Saskatchewanlate Mar2
s. Albertalate Mar2mid-Apr-mid-Jun9early Jun-mid-Jul15
Prairie parkland
Manitobalate Mar-early Apr3late Apr-mid-Jun6mid-Jun-mid-Jul15
Saskatchewanlate Apr2late Apr-mid-Jun2mid-Jun-mid-Jul15
Albertalate Apr2
Alaska
Coastallate Apr-early May4early May-late Jun10mid-Jun-late Jul16
Interiorlate Apr-early May5early May-late Jun11late May-early Aug17
Arctic/Subarctic
Yellowknife, NWTlate Apr-early May6
Churchill, Manitobamid-May6
Southhampton Islandearly Jun6
McKenzie Deltaearly-mid-May6
Southern areas
central CaliforniaMar7mid-Mar-mid-Jun7early May-early Jul7
ne. CaliforniaMar7late Mar-mid-Jun7early May-early Jul7
Utahmid-Apr-mid-Jun12mid-May-late Jul12
Iowamid-Apr-mid-May13early Jun-mid-Jul15
Nebraskamid-Apr-mid-Jun14early Jun-mid-Jul15