Modifiers matching grassland:

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

Simple categories matching upland:

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