ROCK PIGEON

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Rock Pigeon
Lee Karney / USFWS

Conservation Concern: NONE

Population Trend: Poorly Known
Credibility: Mod. Poor

The Rock Pigeon is an abundant breeder in the CW Region. Breeding habitat includes building tops and ledges, bridges, and cliffs.  This non-native introduced species has been a permanent resident in the US for many decades.  BCN Census trends show a considerable decline, but this largely urban and rural species is poorly sampled by the BCN Census which focuses on protected natural areas.

Trend Level

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1997-2004 Trend
Point Count Data
1988-2004 Trend*
All Observation Types

*Data gathered using a assortment of sampling methods  - for casual inferences only
  Avg. Yearly
Rate of Change:

The vertical axis numbers represent an index of the population change.

Note that the scales may vary between graphs.

Avg. Yearly
Rate of Change*:
 
  -13%   -6%  
   
   

 

 

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 145

Sample Size (Records): 32

 

AVG. YEARLY RATE OF CHANGE:
(including standard error)
-41 to 15

 GOODNESS OF FIT:
Chi-square: 288.77, df 50, p 0
Likelihood Ratio: 254.33, df 50, p 0
AIC: 154.33
NOTE: (model fits if p values are above 0.05)

Download Table of All Observations

 

 

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