Modifiers matching grassland:

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

Simple categories matching upland:

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