This is a guide to finding Report: Monster Ecology, a material in Hyrule Warriors: Age of Calamity for the Nintendo Switch. The best places to get Report: Monster Ecology, how to use them, Report: Monster Ecology sell price and more can all be found here!

Best Missions for Farming Report: Monster Ecology

Unnatural Disaster

This high-level challenge contains five powerful foes to defeat, four of which drop a piece of the Report: Monster Ecology upon defeat.

The challenge also has a time limit, so be sure to cook food that increases your damage output such as Spicy Pepper Steak, Meat Pie, and Salt-Grilled Gourmet Meat to finish the battle as fast as possible.
Unnatural Disaster Challenge Walkthrough

Stronger Yet

Stronger Yet requires you to defeat a Hinox, a Blue Hinox, and a Blue-Maned Lynel in under six minutes. No other enemies will appear, so you can focus on defeating the powerful foes and obtain 3 pieces of the Report: Monster Ecology.

Stronger Yet Challenge Walkthrough

Hunting for Gemstones

Hunting for Gemstones contains two Stone Taluses and one Malice Igneo Talus to defeat. Completing this challenge not only gives you 3 piece of the Report: Monster Ecology but also a ton of rare gemstones that you can sell to earn Rupees fast.

Hunting for Gemstones Challenge Walkthrough

How to Get Report: Monster Ecology

Obtain by Defeating Large Foes

Enemy
Fire Chuchu	Calamity Ganon	Windblight Ganon	Thunderblight Ganon
Waterblight Ganon	Fireblight Ganon	Stone Talus	Molduga
Hinox	Lynel	Electric Chuchu	Ice Chuchu

To obtain Report: Monster Ecology, you need to defeat any of the large foes shown in the table above. This also includes their elemental or more powerful variants. Note that you can only get the reports from Chuchus if they are a Vicious Monster.

You will receive one report for each defeated large foe at the end of the battle.

How to Use Report: Monster Ecology

Used for Quests

Quest	Required Materials
Riding Free	・ High-Yield Ancient Furnace x1 ・ Robbie's Machine Lubricant x10 ・ Report: Monster Ecology x1 ・ Report: Relic Analysis x1 ・ Robbie's Maintenance Oil x5
The Relic of Legend	・ Report: Monster Ecology x15 ・ Report: Battle Records x15 ・ Report: Relic Analysis x5 ・ Report: Vicious Monsters x2
The Ultimate Relic	・ Report: Monster Ecology x15 ・ Report: Battle Records x15 ・ Report: Relic Analysis x5 ・ Report: Vicious Monsters x2
Gimme, Gimme, Gimme	・ Report: Monster Ecology x15 ・ Report: Battle Records x10 ・ Report: Relic Analysis x5 ・ Report: Material Properties x3 ・ Report: Vicious Monsters x2
The Many Sources of Strength	・ Report: Monster Ecology x5 ・ Report: Battle Records x10 ・ Report: Vicious Monsters x3
Analyzing Vicious Behavior	・ Report: Monster Ecology x15 ・ Report: Battle Records x5 ・ Report: Relic Analysis x5 ・ Report: Vicious Monsters x6
The Blazing-Blue Blades	・ Robbie's Machine Lubricant x10 ・ Report: Monster Ecology x1 ・ Report: Relic Analysis x1 ・ Robbie's Maintenance Oil x5 ・ Guardian Claw x1
The Source of Strength	・ Report: Monster Ecology x1 ・ Report: Battle Records x3 ・ Report: Vicious Monsters x1
A Helping Claw	・ Report: Monster Ecology x1 ・ Report: Battle Records x1 ・ Robbie's Maintenance Oil x15 ・ Guardian Claw x1
EX Searching for Monster Data	・ Hinox Tooth x15 ・ Lynel Hoof x15 ・ Rupee x3000 ・ Report: Monster Ecology x20 ・ Report: Vicious Monsters x5

List of Quests

Age of Calamity Materials

List of Materials