Modifiers matching grassland:

• open,
• upland,
• rough,
• natural,
• arid,
• temperate,
• agricultural,
• wet,

Simple categories matching upland:

• bird,
• grassland,
• species,
• game,
• mammal,
• area,
• shrub,
• wader,
• site,
• cover,
• passerine,
• raptor,
• feature,
• location,
• crop,
• vegetation,
• community,
• space,
• development,