Table 1.

Area requirements to meet a 30% population target

Area constraint	Single population weekly	Single population yearly	Spatial clustering of species abundance weekly	Spatial clustering of species abundance yearly
Shared-use	14.38	5.51	20.03	6.93
Intact habitat	14.54	7.45	16.44	8.45

Prioritization approach results under shared-use and intact habitat scenarios are shown for 117 Neotropical migrant bird species. Table entries show the area needed to meet targets (million km^2). ‘Weekly’ prioritizes the most efficient target for each week of the year independently and sums the total area across all weeks. The yearly approach prioritized the most efficient target for all weeks combined. Single population identifies the 30% area target for each species from anywhere within the species range. Spatial clustering of species abundance identifies population sub-structure using a clustering approach to ensure representation from across the range of each species in each week of the year