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RescueGroups vs xeno-canto

Same instrument, two spec sheets — measured, not claimed.

APIRescueGroupsNEW—xeno-cantoNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

RescueGroups vs xeno-canto: common questions

Which is more reliable, RescueGroups or xeno-canto?

On our scheduled checks, xeno-canto leads on measured uptime — RescueGroups at —% versus xeno-canto at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do RescueGroups and xeno-canto need an API key?

Neither needs a paid key — RescueGroups is callable with no signup, and xeno-canto is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call RescueGroups and xeno-canto from the browser?

Only xeno-canto is browser-friendly — it returns CORS headers over HTTPS. RescueGroups needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are RescueGroups and xeno-canto free for commercial use?

RescueGroups has unclear commercial terms, and xeno-canto has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.