Portland Crow Roost

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Portland Crow Roost

Portland Crow RoostPortland Crow RoostPortland Crow Roost
  • Home
  • History
  • CommunityScience
  • Support
  • Calendar
  • Other Roosts
  • References

SEASONAL MIGRATION

SPRING

March-April

Crows Return to Territories

Crows may migrate to our metro suburbs or fly hundreds of miles.

March-April: roost counts decrease and by mid-month are reduced by 75% or more:  from 18,000 to 3500.

May: crows continue to depart and nightly roosts are limited to a few hundred by the end of the month.


SUMMER

May-July

Peak Regional Breeding Season

May-July: the only crows remaining in the city center appear to be local residents (i.e. downtown is their territory or non-breeding adults that come into  town at night)


FALL

August-October

Crows Return to PDX

Mid-late August- crow numbers roosting downtown increase to the hundreds.

September, October-crowns continue to return to Portland at night. Numbers grow from hundreds to thousands. The pre-roost is spectacular!


WINTER

November-February

Peak Urban Roost

Nov-February- Counts observed between 6000-18,000

A Season Of Portland Crows

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