Seasonal Transition

by Carl Strang

We have long been waiting for spring, and the seasonal transition at last is under way. Soon the snow birds will be heading back north.

Dark-eyed juncos have begun to sing and to chase each other.

Dark-eyed juncos have begun to sing and to chase each other.

The earliest migrants have begun to come through, or to pass over.

A flock of sandhill cranes flies over Mayslake Forest Preserve.

A flock of sandhill cranes flies over Mayslake Forest Preserve.

They hit a thermal, break formation and use its rising air to gain altitude.

They hit a thermal, break formation and use its rising air to gain altitude.

Breeders have begun to arrive and set up shop.

Great blue herons at the Danada colony

Great blue herons at the Danada colony

A recent arrival at Mayslake Forest Preserve has the smaller birds nervous.

The Cooper’s hawk pauses in its patrol…

The Cooper’s hawk pauses in its patrol…

…then resumes.

…then resumes.

The next mini-stage of migrant birds has begun.

Ruby-crowned kinglet at Fermilab, Sunday

Ruby-crowned kinglet at Fermilab, Sunday

Soon I expect to reach my personal criterion for the arrival of spring and the end of winter.

 

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