eBird & AKN Frequency Histogram API

parameter group	description	parameter name	values	example	default
location	exactly one location parameter is required	subnational1	eBird standard subnational1 codes	US-FL	n/a
		country	2-letter ISO codes	CA	n/a
		bcr	integers 1-64?	14	n/a
		subnational2	eBird standard subnational2 codes		n/a

period	period parameters are optional if specified, both must be provided constraint beginYear <= endYear
		beginYear	defines beginning of period of interest, in YYYY format	2000	????
		endYear	defines end of period of interest, in YYYY format	2000	????

collection	defines dataset of interest required	collection	AKN collection codes, eBird project IDs; initially there will be no away to request the entirety of AKN data as a collection	EBIRD_PR	n/a

species	defines species of interest optional	species	either "all" or scientific name of single species of interest; we will handle lists of species at a later date	Sialia sialis	all

output	defines form of output	output	"f" = returns frequency (float, 0.0-1.0) "c" = returns category (integer, 1-5) "i" = returns image for single species; valid only when single species is requested; implemented at a later date	f	f

if S species are returned, the response has S+1 rows
- row #1 contains N for each of 48 "weeks"
- rows 2 through S+1 contain species name and frequency (0 <= frequency <= 1)
the response contains 50 columns

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