I want to get the contour of only red bird in the image

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Can any one help, I want to see the contour of birds and then separately contour of red colour bird in the image only. Image attached!
I have tried to get the contour but getting this error.
I = imread('birds.jpg');
I0 =rgb2gray(I);
Error in imcontour (line 44)
Error in contour (line 9)
muhammad choudhry
muhammad choudhry on 15 Jul 2020
Please see the screenshot, still getting the error.
version 2020

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Accepted Answer

Cris LaPierre
Cris LaPierre on 15 Jul 2020
Edited: Cris LaPierre on 15 Jul 2020
Change the name of your file to something other than contour. Then in the command window, type clear contour and press enter.
Contour is the name of a MATLAB function that is used in lmcontour. However, due to MATLAB's precedence, it is using your script instead, causing the error.
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muhammad choudhry
muhammad choudhry on 15 Jul 2020
Thanks it resolve the first problem I am getting contours of every bird in the image. Second issue is I only want the contour of red bird (2nd one from the left) is there any way I pick up the colour from red bird and gives the command in the code in which it will only capture the red bird contour.

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