BLACK-BILLED CUCKOO

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Black-billed Cuckoo
Copyright © 2005 Eric Secker

 Conservation Concern: 5PIF, FW

Population Trend: Poorly Known
Credibility: Very Poor

The Black-billed Cuckoo is an uncommon breeder in northern IL and IN, northward.  They are usually found in shrublands, grassland hedgerows, or woodlands with moderate understory.  This species can be very difficult to detect and BCN eBird records are insufficient to produce accurate trends.  BBS data indicates a a significant annual decrease of -2.9% in the upper Midwest.

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*:		  
  ----   ----  
   
   

 

 

Technical Notes (1997-2004 Trend)

Sample Size (Indiv.): 6

Sample Size (Records): 5

 

AVG. YEARLY RATE OF CHANGE:
(including standard error)
0 to 0

  GOODNESS OF FIT:
------
------
------
NOTE: (model fits if p values are above 0.05)

Download Table of All Observations

 
 

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Copyright © 2005 Audubon - Chicago Region & Bird Conservation Network

 
 
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