Avian Bander Companion Kundenservice

599 NORTH AMERICAN SPECIES

Every regularly-occurring breeding, wintering, and migratory species on the AOS Check-list
Searchable by common name, scientific name, or 4-letter IBP alpha code
Browse by taxonomic family or A–Z
Typical band size class shown for every species
Tapping any species shows full aging/sexing criteria if available

DETAILED SPECIES PROFILES

Literature-sourced aging and sexing criteria for the most commonly-banded passerines
Organized by season: fall (HY vs AHY), spring (SY vs ASY)
Covers plumage, skull pneumatization, molt limits, primary shape, iris color, covert contrast, and structural features
Sexing criteria with honest notes on reliability — including cases where CP/BP is the only confident method
Field notes on ecology, hybrid zones, subspecific variation, and identification pitfalls
Sources: Pyle (1997) Identification Guide to North American Birds Part I; North American Banding Council manuals

WING CHORD REFERENCE

75+ species with mean and range by sex (flattened wing chord, mm)
Sourced from Pyle (1997) and NABC manuals
Filter by male, female, or both
Sexual size difference calculated automatically

CUSTOM CRITERIA IMPORT

Paste CSV data to add your own aging/sexing notes for any species
Transcribe directly from Pyle's tables or family-specific guides
Stored permanently on your device — no account or internet required

All data stored locally on your device. No account required. No internet connection needed in the field. No ads, no subscription, no tracking.

Note: All banding must be performed under valid federal and state permits (Migratory Bird Treaty Act, state wildlife agency). Band sizes shown are general guidance only — always verify against the current USGS BBL Bander's Manual for the specific species, age, sex, and population before banding.

Data sources: Pyle, P. (1997) Identification Guide to North American Birds, Part I, Slate Creek Press. North American Banding Council (NABC) Passerine and Near-Passerine manuals. AOS Check-list of North American Birds. IBP standard 4-letter alpha codes. USGS Bird Banding Laboratory (BBL) standard age, sex, disposition, and band-size codes.