Free Backyard Bird Tools
Interactive tools for American backyard birders — calculators, seasonal date lookups and identifiers that give you an instant answer. Every tool is free, works on any phone, and requires no signup.
Hummingbird tools
Hummingbird Nectar Calculator
Enter your feeder size, get the exact 4:1 sugar-water recipe in cups, tablespoons and grams.
Use tool → 🍂When to Take Down Feeders
State-by-state fall takedown dates — and why taking them down early is a mistake.
Use tool →Hummingbird Migration Calendar
When hummingbirds arrive and leave in your state, spring and fall.
Coming this monthBackyard feeding & housing tools
Birdhouse Dimensions Calculator
Pick a species, get the exact hole size, floor size, box height and mounting height.
Coming this monthBird Seed Calculator
How many pounds of seed your feeders need per month — and what it will cost.
Coming this monthBird Identifier Wizard
Answer 4 quick questions — color, size, habitat, state — and identify your mystery bird.
Coming this monthPopular bird guides
Hummingbird Migration Map
Track the seasonal wave of hummingbirds across the United States.
Read guide → 🏠Nest Box Designs by Species
The box dimensions each backyard species actually wants.
Read guide → 🌰What Birds Eat (and Avoid)
A full feeding and nutrition guide for American backyard birds.
Read guide → 🥚Bird Egg Identification Chart
Recognise common backyard bird eggs by colour, size and markings.
Read guide → 🪱Mealworms for Birds
Benefits, feeding tips and best practices for offering mealworms.
Read guide → 📚All Bird Guides
Every article, species profile and how-to on Birdiy.
Browse all →Why we build these tools
Most birding answers online live in long articles and static charts. Our tools give you the answer for your feeder, your species and your state in seconds — then point you to the full guide if you want to go deeper. New tools ship every month; the egg identifier, state checklists and bird comparison tools are next.