- A 30-year study looked at Pacific Northwest birds.
- Benjamin Freeman led the new research in mountains.
- He found an older study by Louise Waterhouse.
- He used her hand-drawn maps and local knowledge.
- Field teams walked to the old field sites.
- They worked early in the morning and in snow.
- Birds were counted during breeding season in May and June.
- Temperatures rose but most bird populations stayed stable.
- Old-growth forest may help birds adapt and survive.
Difficult words
- research — careful study to learn new information
- map — a drawing that shows places or landmaps
- count — to find the number of thingscounted
- temperature — how hot or cold the air isTemperatures
- population — the number of animals in an areapopulations
- old-growth forest — a very old natural forest with large trees
- breeding season — time when animals make and care for young
- adapt — to change to live better in conditions
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Do you like birds?
- Have you seen birds in May or June?
- Have you walked in a forest?
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