[quote=@Gentlemanvaultboy]
[@Lugubrious]
So to get that horde of chickens I've been dreaming of I'd have to fill every available striker slot with chickens?
[/quote]

Not necessarily. There are three possibilities I can think of already. 

First off, there are certain characters that are known for being in groups, as duos, or trios. An example is Techies; if they're defeated, there won't be three spirits -one for each goblin- but one spirit with all three inside. This is the case for spirits in the game, too; Articuno, Zapdos, and Moltres are a single spirit. So, you could just get a spirit that's ten cuccos all together. Of course, it'd be a really tough fight.

Second, Linkle could just get one cucco as a striker. Since the cucco's defining ability is summoning more when it's attacked, it can be reasoned that doing so is simply its power, and it can bring out a bunch more cuccos for a limited time, thus getting your horde while only occupying one slot.

Third, she could just absorb one's spirit and take the cucco's power, gaining the ability to summon cuccos when attacked herself.