# The names of birds, part 3

DevFeed: [The names of birds, part 3](<https://devfeed.tech/articles/the-names-of-birds-part-3-38663.md>)

Original publisher: [Read original article](<https://ericlippert.com/2023/02/01/the-names-of-birds-part-3/>)

Author: ericlippert

Published: 2023-02-01T17:01:15Z

Content type: article

Language: en

Sources: [Eric Lippert](<https://devfeed.tech/sources/eric-lippert.md>)

Topics: [Math and Logic](<https://devfeed.tech/topics/math-and-logic.md>), [.env](<https://devfeed.tech/topics/dotenv.md>)

Tags: [logic](<https://devfeed.tech/tags/logic.md>), [puzzles](<https://devfeed.tech/tags/puzzles.md>), [uncategorized](<https://devfeed.tech/tags/uncategorized.md>)

## AI overview

This installment uses a self-referential kestrel in combinatory logic to explore the consequences of the identity Kxy=x. It argues that if the kestrel is fond of itself, then it is fixated on itself and the forest contains only that one bird, making it lonely.

## Source excerpt

In the autumn of last year my friend Joan and I went on a little trip up to the Skagit valley north of Seattle to photograph birds of prey; I managed to get a blurry but recognizable shot of this ... Continue reading ->