How BirdLedger works

This page outlines how we test products, cite sources, and keep shopping fields current. When we use affiliate links, we may earn a commission; that does not change the price you pay. See the affiliate disclosure and contact us if you spot something that looks out of date.

Our review process

Step 1

All binoculars are tested in the field across at least three habitat types (woodland edge, open water, backyard) before scoring.
Step 2

Feeder recommendations are based on documented species-attraction data, seed waste measurement, and squirrel-resistance in real conditions.
Step 3

Pricing is checked weekly against Amazon, B&H, and Optics Planet; we flag price spikes above 15% of 90-day baseline.
Step 4

Species-specific articles use images verified by vision review to confirm the named bird appears in the hero image.
Step 5

Affiliate revenue comes from Amazon Associates and select optics retailers. No OEM manufacturer sponsorships accepted.
Step 6

Reader field reports and species sightings are incorporated into guides and credited to the submitter by first name and state.