Keeping Mynahs in check!

  • mossie
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7 years 10 months ago #15608 by mossie
mossie created the topic: Keeping Mynahs in check!
Hi

I have often wondered what might evolve to keep the ever expanding populations of Common Mynahs in check. I have considered two natural options:
1. Disesase
2. Brood parasites

The third option of demolishing our homes and replanting our properties with endemic vegetation, I thought was a bit extreme <!-- s:twisted: --><img src="{SMILIES_PATH}/icon_twisted.gif" alt=":twisted:" title="Twisted Evil" /><!-- s:twisted: -->

Anyway, this weekend I witnessed a pair of common mynahs having an altercation with a honeyguide, near their nest, which lasted several minutes. A most likely explanation, is that the honeyguide was trying to drop a few eggs into the Mynah nest, and got caught in the act.

I find this quite an interesting step forward as far as evolution is concerned! If the honeyguides become successful brood parasites with mynah hosts, then we could see each generation of honeyguide gradualy evolving, and getting better at utilising this reproduction resource.

Over time, we can expect several things:

1. Honeyguides becoming more common in urban area's (food permitting).
2. A subspecies of honeyguide evolving in urban area's that are "specialist mynah nesters"
3. Reproductive pressure on the mynahs as far as protecting their nests from parasitic birds, and decreased reproduction from raising other chicks
4. Counter evolution of the mynahs
5. Balance (until something else changes)

Perhaps I won't see this in my generation, but it would be interesting to live long enough to see how this pans out.

Has anybody else witnessed this behavior before? Were the Mynah's able to successfully raise these chicks?

I'd hate to hear the call of Mynah raised Honeyguide :rolleyes:

Mossie

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  • wildtuinman
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7 years 10 months ago #15611 by wildtuinman
wildtuinman replied the topic: Re: Keeping Mynahs in check!
Very interesting thoughts, Mossie!

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