Sentence:  The Swanners gette up the younge swannes about midsummer [24 June] and footemarke them for the owners, and then doe they allsoe <WSD>pinnion</WSD> them, cuttinge a joynte of theire right winges, and then att Michaellmasse [29 Sept.] doe they bringe them hoame, or else bringe hoame some, and leave the rest att some of the mills and wee sende for them. 
Meaning of the word marked with <WSD> tags:  To cut off the pinion of a bird's wing, or otherwise disable or bind its wings, in order to prevent it from flying.