Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »
Q&A

Are perches on humming bird feeders bad for the humming birds?

+1
−0

Apparently, there is a theory that says

Hummingbirds can become hypothermic if they sit on a feeder perch and drink several cropfuls of cold sugar water early in the morning. The birds fall to the ground unresponsive if they become extremely hypothermic. If they are not found before they die and warmed up, they just lay on the ground or in one case on the chair until they die.

My experience says that sometimes they hover and sometimes they sit, it just depends on the hummingbird and how many of them are at the feeder at once.

Is there any evidence to back this theory up?

History
Why does this post require moderator attention?
You might want to add some details to your flag.
Why should this post be closed?

0 comment threads

1 answer

+1
−0

This is not supported.

Hummingbirds have a very high metabolic rate, the highest rate among all tetrapods (all the land dwelling animals). They do appear to sometimes fall over after drinking the sugar water, but that is likely because it is super cold and remains liquid below freezing and so the poor bird gets a bit of shock when it realizes that the nectar is way colder than they expect.

Given that they are known to go into a torpor on many nights (a very deep sleep where they drop their body temperature to conserve energy), the shock from the cold sugar water likely does not harm it too much, as their bodies can handle dropping considerably in temperature. My guess is that the hummingbirds that have been cited as being influenced by the presence of a perch simply dropped into a torpor suddenly and were fine after they rested.

Having a perch is not going to harm these hummingbirds. They are capable of either hovering or perching, but perching is simply easier for them and is likely helpful in the early morning when they just exited torpor and their energy storage is low.

History
Why does this post require moderator attention?
You might want to add some details to your flag.

This post was sourced from https://outdoors.stackexchange.com/a/22116. It is licensed under CC BY-SA 4.0.

0 comment threads

Sign up to answer this question »