Coast Road
As the group is moving along everyone except Zar notices some shadows far up above in the sky, four large birds, nearly the size of horses are circling above...
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Perception Block
Ercard (d20+1)[13] If Advantage/Disadvantage(d20+1)[10]
Luna (d20+5)[19] If Advantage/Disadvantage(d20+5)[14]
Phynn (d20+3)[16] If Advantage/Disadvantage(d20+3)[15]
Pau'la (d20+2)[14] If Advantage/Disadvantage(d20+2)[17]
Zaar (d20+2)[6] If Advantage/Disadvantage(d20+2)[3]
Only Zar does not see them.
Nature
DC5 Know they are predatory birds
DC10 Know they are Giant Vultures, large predators and pick off weakened prey, sometimes known to track wounded animals for days before attacking.
DC15+ Basically know their statblock