Hudson River Almanac
The Hudson River Almanac is a weekly natural history newsletter that covers the Hudson from the High Peaks of the Adirondacks to New York Harbor. It seeks to capture the river’s spirit, magic, and science by presenting observations from many individuals who delight in the diversity of nature in the Hudson Valley.

Since 1994, observations have been compiled from the contributions of more than 2000 volunteers, ranging from elementary school students to professional biologists. In presenting these records, the Almanac provides valuable river information to the public, places contemporary observations in historical perspective, and encourages others to look more closely at the Hudson and share what they see. In addition to recording what nature is doing over the year, the entries offer a fascinating measure of human emotional responses to natural phenomena.

Over time, the Almanac may serve as a comprehensive program to document changes in the ecosystem. Often, information about obscure animals and subtle changes can come only through direct observations made in many places over long periods of time. By compiling records from volunteers who observe nature as scientists or simply for their own pleasure, the Almanac builds a data base that can be used to guide future studies of Hudson Valley ecology.

Contribute Your Observations

Share your observations with other Hudson River lovers by e-mailing them to compiler Tom Lake

December 16, 2023 to January 5, 2024

December 16, 2023 to January 5, 2024

During our three week Holiday pause (21 days), we had a Winter Solstice, two major Holidays, a storm of Christmas Bird Counts, a deluge of rain, and several rare bird occurrences. This edition of the Almanac does its best to fill us in.

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December 9 to December 15, 2023

December 9 to December 15, 2023

Our Hudson River Almanac will take our traditional Holiday Season pause beginning next week and going through New Year’s. However, receiving and compiling readers’ stories, adventures, and observations does not pause. The river, the forest, and the air never take a holiday. And without all of you, we have no Almanac. After the pause, we will all begin Year 31 of our Hudson River Almanac.

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December 2 to December 8, 2023

December 2 to December 8, 2023

The watershed is truly in transition. With winter approaching, at one end of the watershed the week featured migrating waterfowl spurred on by severe weather to the north, but at the other end of the watershed, tropical fishes—real risk-takers—were still being caught.

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November 25 to December 1, 2023

November 25 to December 1, 2023

Project of the Hudson River Estuary ProgramCompiled and edited by Tom Lake, Consulting Naturalist Overview Most of the watershed is still braced for the first serious onset of winter weather. The river has chilled to below wading temperature and seining has become a...

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November 18 to November 24, 2023

November 18 to November 24, 2023

Project of the Hudson River Estuary ProgramCompiled and edited by Tom Lake, Consulting Naturalist Overview After many years of sharing the Hudson River’s tidewater with family, friends, students, and colleagues, I have concluded that hauling a seine is like reading a...

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