Quiz on estimating numbers – flocks in flight

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Clicking on any image will open the full size image in a new window, so you can study the larger size and then return to the quiz – still in progress – in this window.

Thanks to Martin Reid for allowing the use of his photos (and for counting the birds in each one!).

Estimating numbers - flocks in flight

Question 1
How many Anhingas? (photo by Martin Reid)   estim15aanhingasthermalingMLAC
A
about 300
B
about 200
C
about 260
D
about 360
E
about 400
Question 1 Explanation: 
San Antonio, March 24, 2007
Question 2
How many hawks? (photo by Martin Reid) estim12ahawksgliding
A
about 100
B
about 120
C
about 80
D
about 160
E
about 140
Question 2 Explanation: 
Bazemore, Corpus, sep 20, 2008
Question 3
How many geese? (photo by Martin Reid) estim19ageeseflyingtight
A
about 270
B
about 350
C
about 400
D
about 240
E
about 320
Question 3 Explanation: 
east of Rosenberg, TX, Jan 30, 2009
Question 4
How many American White Pelicans, including partial birds at the edges? (photo by Martin Reid) estim34apelicanmoon
A
about 70
B
about 100
C
about 90
D
about 80
E
about 60
Question 4 Explanation: 
Fort Worth, TX, Oct 14, 2003
There are 4 questions to complete.

5 thoughts on “Quiz on estimating numbers – flocks in flight”

    1. Me too! I underestimated on every picture, some by as much as 100! I don’t know the method and better read up on it!

  1. Linda Ireland

    It’s so much easier to estimate from a photo than a quickly disappearing flock overhead but practice (and an electronic tally counter) can help.

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