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"Great blue herons form rookeries with egrets, cormorants, and other herons" according to the Wingspan card
John Heinz National Wildlife Refuge, Philadelphia D3400 + 70-300mm F4.5-6.3 @ 300mm, ISO 560, 1/1000, F6.3(4MP crop, equiv 994mm F20)
nesting in San Francisco D3400 + Tamron 150-600mm F5-6.3 G2 @ 600mm, ISO 100, 1/400, F10(12MP crop, equiv 900mm F16)
San Francisco R5 + 800mm F11, ISO 640, 1/2000(6MP crop, equiv 1952mm F27)
San Francisco R5 + 800mm F11, ISO 1250, 1/1000(37MP crop, equiv 876mm F13)
Alcatraz Island, San Francisco. It jumped off the "stump" branch visible 30% below the upper left corner of the frame. D5600 + 70-300mm F4.5-6.3 @ 300mm, ISO 900, 1/2000, F6.3(24MP, equiv 450mm F9.5)
nesting in San Francisco D3400 + Tamron 150-600mm F5-6.3 G2 @ 500mm, ISO 100, 1/400, F9(4MP crop, equiv 1015mm F18)
nesting in San Francisco D3400 + Tamron 150-600mm F5-6.3 G2 @ 600mm, ISO 180, 1/400, F6.3(10MP crop, equiv 1340mm F14)
San Francisco R5 + 800mm F11, ISO 1000, 1/2000(15MP crop, equiv 1383mm F19)
Forsythe National Wildlife Refuge, New Jersey R7 + 800mm F11, ISO 400, 1/100(30MP crop, equiv 1336mm F19, vertical)