corvid IB-corvid-horizontal-transmission

Crows acquire dangerous-human recognition mostly by HORIZONTAL social learning: naive birds that had mobbed alongside knowledgeable birds later scolded at roughly 8x the control rate (27.8% of 54 vs 3.3% of 181).

Observed quantities

horizontal social learning ~8x: 27.8% of 54 vs 3.3% of 181

Primary source

Cornell, Marzluff & Pecoraro 2012, Proc. R. Soc. B

Boundary of this block

Companion measured result dropped here for count: VERTICAL transmission to fledglings occurred in 7/11 territories where parents were absent vs 1/9 — a real, separable finding (see manifest).

Connections

Outgoing

relates to Iterated serial reproduction behaves as a Markov chain whose STATIONARY distribution equals the transmitters' shared prior: chains started from 2.63, 4.19 and 5.76 cm all converged to the same value within about 20 transmissions. cross-domain: iterated transmission of a representation across individuals

Incoming

relates from In crows, mobbing is a self-reinforcing recruitment LOOP: 82% of scolding events recruited a mob, averaging 6.4 birds (n=103). recruiting a mob is the horizontal social-learning event itself