What is gaping in blackbirds?

Most birds have jaw muscles that are designed to close tightly around their food, like grabbing berries off a tree, or crushing seeds. But in blackbirds, or those in the icterid family, their muscles have the opposite strength.
Chapters:
What is gaping in blackbirds? 00:00
Oropendolas 01:08
Conclusion 01:36
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Social Media:
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Photos and video sources:
Canva.com
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Videvo.net
Elements.envato.com
Credits in order of appearance:
What is gaping in blackbirds?
-Bohemian waxwings by Panksvatouny from Canva.com
-Bohemian waxwing vocalization by Justin Watts, XC704128. Accessible at www.xeno-canto.org/704128.
-Dictionary close up by romansu from Canva.com
-Boat-tailed grackle by passion4nature from Canva.com
-Boat-tailed grackle by passion4nature from Canva.com
-Yellow-headed blackbird by Devonyu from Canva.com
-Common grackle with insects in beak by RT-Images from Canva.com
Oropendolas
-Crested oropendola by BlackBoxGuild from videvo.net
-Montezuma oropendola by BlackBoxGuild from videvo.net
-Crested oropendola in rainforest by creativesight from elements.envato.com
Conclusion
-Montezuma oropendola by BlackBoxGuild from elements.envato.com
-Long-tailed meadowlark by BlackBoxGuild from videvo.net
-Baltimore oriole from BlackBoxGuild from elements.envato.com
-Baltimore oriole vocalization by Jonathon Jongsma, XC178046. Accessible at www.xeno-canto.org/178046.
Thumbnail credit: Boat-tailed grackle by passion4nature from Canva.com

[@jeffolson4731]

Fascinating information. The more I learn from your channel the more I realize how much I don't know about birds.

[@allthingsbirdie]

Thank you so much!

[@Jangolena]

i watch grackles poking around in my yard all day, i never realized!! and i only recently learned they were in the icterediae family, and that oropendolas even existed omg - love their faces! thanks for this video :D

[@kitkat5765]

This is super cool! I don't think I've ever really noticed this in icterids before, but now I'll be on the lookout 👀😊

[@allthingsbirdie]

Thank you! I will be as well, especially this spring.

[@BornFreeFilms]

Hmmm, didn't know that, thanks.

[@travisbicklejr]

Learned something new! Thanks!

[@jz3953]

Wow!

[@greggillson388]

I did NOT know this. Thanks!